Answer:
it is TRUE
Although Western Europe is very industrially developed, agriculture is the main form of land use. The Alps are considered a climatic divide in Western Europe. The Aegean Sea is an arm of the Mediterranean between Greece and Turkey.
if you know that the chuckanut formation was deposited sometime during the tertiary (66-2.6 million years before present), then based on this climate reconstruction data, which hypothesis is true?
Once upon a time, the Seattle area had a climate warm enough to support several tree species. The Chuckanut rock ended up where it is today as a result.
Why is the weather significant?Longer periods of time in one location have a Mediterranean climate. A description of such an environment includes specifics like the usual temperature for each season, how much precipitation there is, and how much sunlight there is.
Why does the weather matter?The weather has an effect on almost every aspect of our lives, including the places we go on vacation, the food we eat, the transportation we use, and the clothes we wear. It has a huge impact on life expectancy, our pleasure, and our ability to survive. The climate is the long-term pattern of heat in any certain location.
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what will the distribution of continents look like 100 million years from now, assuming the present rate and direction of continental movement?
The continents' distribution in 100 million years, assuming the present rate and direction of their movement, may look like the attached image below. The hypothetical landmass is called Amasia.
100 million years from now, the face of the Earth will be very different from what we see now. Because of the continental movement, it has been hypothesized that a supercontinent composed of the merger of Asia and North America will form. This prediction is mostly based on the current fact that the Pacific Plate is subducting under Eurasia and North America, pushing the North America westward. This hypothetical supercontinent is called Amasia.
The attached image below shows Amasia, the name of the hypothetical supercontinent that might form 100 million years from now as a result of continental movement. The image is made by Mitchell et al. Nature.
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oil and gas of the paradox basin: the location and age of the basin, its interpreted tectonic setting, the sequence of rocks, and the origin and geologic trapping of petroleum oil and gas of the permian basin: the location and age of the basin, its interpreted tectonic setting, the sequence of rocks, and the origin and geologic trapping of petroleum limestone resources of the southwest united states: the location, age, and formation names of the main sources of limestone used in the production of cement and lime in arizona, utah, nevada, and southern california
According to the Federal Reserve Bank of Dallas, the larger Permian Basin is responsible for almost 40% of the nation's total oil production and nearly 15% of its natural gas production.
And the Delaware Basin alone offers a sizable amount of prospective expansion. The Delaware Basin in West Texas and Southern New Mexico has the potential to generate 281 trillion cubic feet of natural gas and 46.3 billion barrels of oil, according to a 2018 estimate by the U.S. Geological Survey. In fact, the Permian Basin is a significant and lucrative supply of domestic natural gas and oil. But according to the most recent geological evaluations and American energy use, Permian oil reserves are not expected to last Americans for 200 years.
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The expansion of the universe after its origin takes place by a phenomenon called.
The expansion of universe origin after an event known as "Big bang"
Before the big bang it was assumed that universe's size was like pea and with increasing temperature and gases in it become denser and later it explodes.
Big bang assumes to be starting point for the expansion of the universe and other bodies starting to be formed like planets, comets etc. This phenomenon has its own importance for studying the continuing growth of the universe.
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mature sedimentary grains are... select all that apply. group of answer choices poorly sorted well rounded well sorted larger in size angular small in size
The correct answer is option C.
In sedimentary rocks, mature sedimentary grains are well sorted.
What are sedimentary grains?Sedimentary grains are units of sedimentary rocks and mature sedimentary grains are well-sorted because they have a uniform appearance.
More specifically, these grains are well rounded and are of similar size and shape, and also exhibit similar composition with a little variation in their appearance.
On the contrary, immature grains have a variety of shapes and sizes and are more rounded, and show a diverse composition with a large degree of variation.
Simply put, the chemical composition of sedimentary grains shows that they are either organic or inorganic material that is formed as a result of weathering of rock fragments and are carried away and deposited by wind and water, etc.
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the rules that constrain how point, line, and polygon features share geometry. defines and enforces data integrity within a geodatabase as well as allowing advanced relationship queries and feature creation/editing tasks.
Geodatabase topology is the rules that constrain how point, line, and polygon features share geometry. Defines and enforces data integrity within a geodatabase as well as allowing advanced relationship queries and feature creation/editing tasks.
About Geodatabase topologyA Geographic Information System (GIS) is a database system with analytical capabilities for spatially referenced data. GIS has the ability to integrate spatial data and attribute data so that the analysis is able to produce the desired information. GIS can also be used to input, store, retrieve, process, analyze and generate geospatial data, to support decision making in the planning and management of natural resources, environmental transportation, urban facilities and other public services.
In GIS there is a database that has a geographic reference (georeference) or also called a geodatabase. Geodatabase is an integrated database, a central source of data and can be accessed by various existing and future applications for information and analysis needs. Geodatabase is a relational data management concept that contains spatial and nonspatial data. Geodatabase helps the process of storing and managing geographic information in a standard data management system.
By using a geodatabase, users will get several benefits at once. These include all features and their attributes having a centralized storage location, the ability to group features into subtypes and create spatial and attribute validation rules. Geodatabase became known in ArcGIS 9.x. Geodatabase is a relational database containing geographic information. Geodatabase consists of feature classes (spatial) and tables (non-spatial).
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In order to correctly rank the events in the Grand Canyon scene in Part A, it is necessary to apply several geologic laws. From the list below, please select only the laws that are used to determine the order of events in the photograph in Part A.
Select all that apply.
View Available Hint(s)
Select all that apply.
The Law of Inclusions
The Law of Cross-Cutting
The Law of Lateral Continuity
The Law of Original Horizontality
The Law of Superposition
The correct answer is The Law of Original Horizontality. It is necessary to apply several geologic laws.
Sediment is deposited horizontally, according to the original horizontality concept. With liquids, it can be sometimes simpler to picture this: picture pouring water into a cup. The water's surface is absolutely horizontal and flat. That water stays flat when you pour it into a bowl. According to the Law of Original Horizontality, all rock layers were initially deposited horizontally and are therefore susceptible to deformation. This enables us to deduce that for the rocks to be slanted, something must have happened to them. This comprises quakes, faulting, and mountain-building activities.
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a seismic station recorded an earthquake that was 4,000 km away. what was the travel time difference between p-wave arrival and s-wave arrival in seconds?
A seismic station 4,000 kilometers distant noted the earthquake. The time gap between the arrival of the P-wave and the arrival of the S-wave was 320 seconds.
Please refer to the attached picture below. The graph indicates that the P-wave will reach the seismic station in 7 minutes. P-wave extrapolation stops at a vertical time scale cutoff of 7 minutes. At 12 min. 20 sec., the S-wave will reach the seismic station.
On the vertical scale, one minute is split into three segments. Thus, each segment will last 20 seconds.
So, travel time difference = S wave arrival - P wave arrival
= 12 minutes 20 seconds - 7 minutes
= 5 minutes 20 seconds
We know that 1 minute = 60 seconds
So, 5 minutes = 5 × 60
= 300 seconds
Consequently, the distance between the arrival of P wave and the arrival of S-wave = 300 seconds + 20 seconds
= 320 seconds
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how would a decrease in the tilt of the earth's axis change the intensity of the seasons in the mid-latitudes?
A decrease in the tilt of the earth's axis changes the intensity of the seasons in the mid-latitudes when tilt affects the amount of sunlight on the Earth's surface receives throughout the year.
The tilt of the earth's axis of rotation is a condition in which the angle of the earth's axis of a planet deviates from the perpendicular drawn to its orbital plane. This kind of tilt makes the amount of sunlight that the earth receives varies at each point. This phenomenon then affects the change of seasons on earth throughout the year.
Seasonal changes will affect temperature changes. Temperature changes are affected by latitude. The temperature will be inversely proportional to latitude. The higher the latitude, the lower the temperature. The temperature will rise or warm when the latitude is at a low point.
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If the Earth were to reorient such that the North Pole always received direct sunlight (always faced the Sun), how would that change Earth's climate? A. The equator would not change in climate. B. The South Pole would get colder. C. The equator would get warmer. D. The North Pole would get more wind.
If the Earth were to reorient such that the North Pole always received direct sunlight (always faced the Sun),The South Pole would get colder.
The Earth receives sunlight due to its tilt and rotation about its axis, and the position of the North Pole is realigned with the position of the Sun, so more sunlight reaches the north, snow and ice melt faster, The equator has little effect, but Antarctica is darker and colder, indirectly affecting Earth's climate.
therefore, If the Earth were to reorient such that the North Pole always received direct sunlight (always faced the Sun),The South Pole would get colder.
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what is the reason that coasts such as those in canada, north britain, and scandinavia have been uplifted?
The reason that coasts such as those in Canada, north Britain, and Scandinavia have been uplifted are The crust is rebounding after the recession of glaciers. The correct answer is option (d).
The coast is the land near an expanse. The line of a coast, where land meets water, is named the border by water. Waves, tides, and currents help form coastlines. Such a classification leads to the description of three comprehensive tectonic types of coasts: (1) accident coasts, (2) following-edge coasts, and (3) borderline ocean coasts.
A glacier is a continuous body of thick icicles namely uniformly affecting under allure own weight. A glacier forms a place the growth of snowstorms surpasses allure ablation over many ages, frequently day. The best glacier on the planet, Antarctica's Lambert Glacier, is one of the planet's fastest-mobile hailstone streams.
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The complete question is:
What is the reason that coasts such as those in Canada, north Britain, and Scandinavia have
been uplifted?
A) The sea level has fallen.
B) The ocean crust has subsided.
C) The crust has uplifted due to plate tectonics.
D) The crust is rebounding after the recession of glaciers.
tectonic plates unit review practice 1 of 81 of 8 itemspause question why is no land created or destroyed at transform boundaries?(1 point) responses because the plates only slip past each other at these boundaries because the plates only slip past each other at these boundaries because the plates are more dense at these boundaries because the plates are more dense at these boundaries because magma rushes into gaps at these boundaries because magma rushes into gaps at these boundaries because the plates crumble into each other at these boundaries
Review for the unit on tectonic plates. One of 81 total products. The plates only pass each other at certain borders, causing a pause.
Simply put, what do tectonic plates mean?A tectonic plate, also known as a lithospheric plate, is a substantial slab of solid rock with an uneven shape that is typically made up of the both the oceanic and continental lithosphere. The Ocean and Antarctic Provinces are some of the largest plates, but they can vary in size from very few hundred to a few thousand kilometers broad.
Tectonic plates: how are they created?Cooler portions of the Earth's crust were dragged downward into to the hotter upper mantle starting about four billion years ago, causing damage to and deterioration of the overlying crust. According the authors, this cycle repeated until the weak spots established plate borders.
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which of the following are factors that influence the amount of rainfall that becomes runoff versus groundwater?
The factors that influence the amount of rainfall that becomes runoff are the nature of the ground surface, the rate of rainfall and the slope of the land. (Option D)
Surface runoff, also known as overland flow, refers to the water discharged which occurs on the ground surface when excessive water from rainwater, stormwater, meltwater, or other sources, saturates the ground up to a point that water can no longer be sufficiently and rapidly infiltrate in the soil. In order words, when rainfall exceeds the soil infiltration rate, surface runoff happens. Factors affecting runoff include rainfall intensity, ground water storage capacity, slope of the ground, and infiltration rate.
Note: The question is incomplete as it is missing options which are A) nature of the ground surface. B) rate of rainfall. C) slope of the land. D) all of the above.
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after viewing the map on canada's forest regions (figure 5-13 page 113) what trends do you notice in terms of the location of sawmills and pulp and paper mills and the distribution of the majority of canada's population
The trends in the distribution of Canada's majority population, and the location of the sawmills and pulp and paper mills is that they are located in areas that have forests.
How is Canada's population distributed?Canada is one of the largest nations in the world when it comes to landmass but there are parts of Canada that are not occupied by many people. This is because a lot of Northern Canada is basically frozen and would therefore be a difficult place to live for anyone.
This is why most of Canada's population is located in the South, where the climates are not as cold, and there are natural resources like forests. It is these forests that sawmills settle next to, as shown by the map of Canada's forest regions. We see saw mills in higher quantities in Cordilleran forests than any other place.
Pulp and paper mill factories on the other hand, see, to prefer Boreal forests.
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Near what land mass did Hurricane Jeanne die?
please help , the marking period is going to end in a few days.
Near the island of Hispaniola Hurricane Jeanne lose strength and downgrade to a tropical depression.
What do you mean by Hurricane?A tropical storm that has sustained winds of 74 mph or greater is referred regarded as a hurricane.
Jeanne reached hurricane strength on September 16 near the eastern coast of the Dominican Republic on the island of Hispaniola after passing through Puerto Rico, but later that day as it proceeded across the mountainous island, it weakened to tropical storm status.
Therefore, Hurricane Jeanne lose strength and downgrade to a tropical depression near the island of Hispaniola.
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For this topic, you will choose one (1) topic from the attached list and construct one one-page concept sketch. Remember that a concept sketch consists of a sketch (or series of sketches), labels, and complete sentences written around the sketch describing the important processes or parts of the sketch. Oil and gas of the Paradox Basin: the location and age of the basin, its interpreted tectonic setting, the sequence of rocks, and the origin and geologic trapping of petroleum Oil and gas of the Permian Basin: the location and age of the basin, its interpreted tectonic setting, the sequence of rocks, and the origin and geologic trapping of petroleum Limestone resources of the southwest United States: the location, age, and formation names of the main sources of limestone used in the production of cement and lime in Arizona, Utah, Nevada, and southern California
Rocks with a hornfels texture are typically found in the region of contact metamorphism, a type of temperature-dependent metamorphism in which pressure has little or no impact.
Contact metamorphism (also known as thermal metamorphism) occurs when rock is heated by the intrusion of hot magma.
The dark grey rock in this photo is an intrusion (a sill) between layers of paler grey limestone. The limestone has been altered to form white marble just above and below the intrusion.
Contact Metamorphism can happen on scales ranging from a few millimeters on either side of a small intrusion to several hundred meters around a large igneous body like a batholith.
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when do rocks along a fault have the highest amount of stress and stored elastic strain? multiple choice right before an earthquake several weeks or months after an earthquake none of the choices are correct. because rocks cannot behave in an elastic manner right after an earthquake
The correct response to the question is "just before an earthquake," when rocks around a fault have the maximum levels of strain or absorbed elastic strain.
Explain what rocks are.According to geology, a rock is just a naturally occurring material made up of crystalline crystals of ore deposits that have fused to together form a solid mass. The minerals might not even have formed simultaneously.
How are rocks used?They are a part of daily life and aid in the development of new technology. We use mineral deposits for things like construction, cosmetics, transportation, infrastructure, and appliances.
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what will happen when the glacier retreats, allowing the two populations to come back together (secondary contact)? be sure to account for all possible outcomes.
Based on the question, the things that will happen when the glacier retreats and allows both populations to have secondary contact are:
If enough time has passed, each species will be very different and will be unable to mate with each other. If this happens, they may either compete against each other or simply occupy different niches.They will still be similar and still able to mate with each other. If this happens, they will become one species again.Secondary contact is a process in which two populations of a species are geographically reunited after being separated. This contact allows the exchange of genes between the two populations.
The question above isn't complete, but most likely the completed version is as follows:
Suppose a bird population that qualifies as a single species according to the Biological Species Concept is separated into 2 isolated populations by an advancing glacier during an Ice Age. What will happen when the glacier retreats, allowing the 2 populations to come back together (secondary contact)? Be sure to account for all possible outcomes.
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examine the figure. of the three forms of hard stabilization illustrated here, which one is the groin?
The correct answer is Hard stabilization is the use of human-made structures to prevent coastal erosion.
Rocks, soils, and/or sands near the coast are worn down or carried away by the process of coastal erosion, which is brought on by local sea level rise, powerful wave action, and coastal flooding. As a result of the action of waves, currents, tides, wind-driven water, waterborne ice, or other storm-related effects, coastal erosion is the loss or displacement of land as well as the long-term removal of silt and rocks along the coastline.The last main erosional process is known as hydraulic action, and it involves erosion brought on by the power of a water body. Rocks are forced toward the ocean as a result of the shock wave pressure that separates them from their source. Stacks, sea caves, and sea arches are common formations along coastlines that have undergone erosion.
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___ are based on connections. They are organized around a focal point and including the areas linked to the focus through patterns of trade,communication, and/or transportation routes.
Functional regions are based on connections. They are organized around a focal point and including the areas linked to the focus through patterns of trade, communication, and/or transportation routes.
What is Functional regions aboutA functional region is a predetermined geographic area with a predetermined focal point and function.
In geography, a functional region is a space dominated by a node, focal point, or central hub and enclosed by interconnected links. The principal node in a functional region features neighboring areas with shared social, political, or economic functions that relate to transportation, trade, communications.
Hence, it is a region with a main purpose that is built around a certain activity. For whatever function or activity the functional region is concerned with, there is typically a central hub or point of distribution within the region.
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Functional regions are based on connections. They are organized around a focal point and including the areas linked to the focus through patterns of trade, communication, and/or transportation routes.
What is Functional regions about?A functional region is a predetermined geographic area with a predetermined focal point and function.
In geography, a functional region is a space dominated by a node, focal point, or central hub and enclosed by interconnected links. The principal node in a functional region features neighboring areas with shared social, political, or economic functions that relate to transportation, trade, communications.
Hence, it is a region with a main purpose that is built around a certain activity. For whatever function or activity the functional region is concerned with, there is typically a central hub or point of distribution within the region.
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an earthquake of magnitude 7.0 on the richter scale is how much greater than an earthquake of magnitude 5.0?
On the Richter scale, a magnitude 7.0 earthquake is 100 times more powerful than a magnitude 5.0 earthquake.
When compared to a magnitude 5 earthquake, a magnitude 7 earthquake is 100 times stronger. The scale went up from 5 to 7, which is an increase of 2, so you multiply the magnitude of the weaker earthquake earthquake by 107-5, which equals 102, to get the magnitude of the stronger earthquake..
earthquake, any jolting of the earth that occurs suddenly and is brought on by seismic waves moving through the planet's rocks. Seismic waves magnitude are created when a form of energy that has been trapped in the Earth's crust for a while suddenly escapes, typically when massive rocks that are rubbing up against one another suddenly fracture and "slip." Most earthquakes happen along geologic faults, which are confined areas earthquake where rock masses move relative to one another. The major fault lines in the world can be found on the edges of the enormous tectonic plates that make up the crust of the Earth. (View the list of large earthquakes.)
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how does the inward drop in air pressure cause heat to be added to a hurricane that is over the ocean?
Once an air parcel reaches the hurricane's eyewall, it turns upward and rises due to a process called convection.
The inward drop in air pressure in a hurricane allows inward flowing air to cool below the sea-surface temperature, which in turn allows more heat to flow in from the sea.
Due to low pressure at its center, twists stream toward the focal point of the tempest and air is constrained vertical. High in the climate, winds stream away from the tempest, which permits additional air from underneath to rise. The air that ascents should be warm and wet so it frames the billows of the tempest.
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rare earth elements are considered to be strategic mineral resources. what is meant by strategic minerals, and why are rare earth elements considered strategic minerals?
Strategic minerals are those that are important for both a nation's socioeconomic development and strengthening its defenses.
Strategic minerals are those required to meet a country's military, industrial, and basic needs during times of crisis. Typically, these minerals are imported from nations with an abundance of them when domestic production cannot meet demand.
The earth's crust contains many rare earth minerals, which are not particularly rare. The reason why these metals are referred to as rare is that it is challenging to extract the metals from the ore. Rarely do rare earth metals exist pure. It is exceedingly expensive to mine for rare earth metals.
The Earth's crust's rarest naturally occurring element is Astatine. The chemical element astatine has the atomic number 85 and is represented by the symbol At.
Because they serve as the foundation for many modern technologies and are crucial to both economic growth and national security, rare elements are referred to as strategic minerals.
Hence, rare elements are regarded as strategic minerals.
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most earthquakes occur at depths of: multiple choice 100-700 km. less than 100 km. greater than 100 km.
Most earthquakes occur at depths of less than 100 km. As most of the earthquakes restricted to this depth only except the deep focus earthquake at trench.
Earthquakes happen in the crust or upper mantle, which extends from the surface of the planet to a depth of around 800 kilometers (about 500 miles).The intensity of shaking at the surface from an earthquake that happens at 500 km depth is significantly less than if the same earthquake had occurred at 20 km depth because the intensity of shaking from an earthquake weakens with increasing distance from the earthquake's source.Additionally, we can learn a lot about the tectonic environment and the structure of the Earth from the depths at which earthquakes occur. The subduction zones, where plates collide and one plate is subducted beneath another, are the most obvious examples of this. We can see specifics of the structure of a subduction zone, such as how steeply it is dipping and whether the down-going plate is planar or bending, by carefully plotting the location and depth of earthquakes associated with the zone. The mechanics and characteristics of the deformation in the subduction zone are revealed by these specifics, which are significant because they provide us with knowledge of their nature.Learn more about Earthquakes, here
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the earth's surface absorbs solar radiation and then radiates it into the atmosphere as infrared radiation. greenhouse gases absorb this radiation and trap heat within the atmosphere. this process leads to which of the following properties of earth's atmosphere? (hint: from which direction is the atmosphere heated?)
Pressure increases with altitude Temperature decreases with altitude in the troposphere Ozone O3 is formed in the thermosphere Temperature increases with altitude in the troposphere
The troposphere, the first and lowest layer of the Earth's atmosphere, is where most meteorological events take place and comprises 75% of the planet's total atmospheric mass, 99% of the entire mass of water vapor, and aerosols.
The Greek terms tropos, which means "spinning," and sphaira, which means "sphere," indicate that rotational turbulence mixes the air layers and so defines the structure and phenomena of the troposphere.
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overturn occurs after ice melts and water at 4 0c rises, while a blank is the area of a lake in summer where the water temperature changes abruptly due to thermal stratification.
In temperate lakes, a spring capsize occurs after ice melts and water at 4 0C rises, while a thermocline is the area of a lake in summer where the water temperature changes suddenly due to thermal position.
The subcaste that separates warmer face mixed water from cooler deep water is known as a thermocline.
Water bodies correspond of layers that vary in consistence grounded on temperature. The epipelagic zone, also known as the" ocean skin" or the" sun zone," is the topmost subcaste of the ocean's face. The commerce of this subcaste with the wind and swells mixes the water and disperses the heat. The thermocline is located at this subcaste's base. The subcaste that lies between the face's warmer mixed water and its cooler depths is known as a thermocline. In a body of water, the thermocline can generally be linked by the unforeseen temperature change that occurs.
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Complete question:
In temperate lakes, a ______ overturn occurs after ice melts and water at 4 0C rises, while a ______ is the area of a lake in summer where the water temperature changes abruptly due to thermal stratification.
Which description best presents the arrangement of continents, oceans, and landforms according to the theory of plate tectonics? question 3 options: oceans eroding along different paths within a single continent over millions of years, causing it to break up several divisions of two original continents over millions of years large pieces of pangaea drifted in different directions over millions of years the motion of lithospheric plates over millions of years
The description which best presents the arrangement of continents, oceans, and landforms according to the theory of plate tectonics is the motion of lithospheric plates over millions of years.
A tectonic plate, sometimes referred to as a lithospheric plate, is a sizable (enormous), solid rock slab with an uneven shape that is typically composed of two (2) primary plates: Continental dinnerware, marine plates.
According to the idea of plate tectonics, the solid outer crust of Earth (lithosphere) is separated into enormous slabs of solid rock (plates), which normally migrate through the asthenosphere over millions of years, including the upper part of the mantle. We can infer from the theory of plate tectonics that the movement of lithospheric plates over millions of years is what led to the arrangement of continents, oceans, and landforms.
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What are the four classes of large organic molecules important to life on earth?.
There are four classes of large organic molecules important to life on Earth—carbohydrates, lipids, proteins, and nucleic acids.
They carry out the chemical processes necessary for life and build the cells of an organism. All of these molecules contain carbon, which is the fundamental component of life and is referred to as a biomolecule since it is a component of living matter. Because all living things contain carbon, organic substances are crucial. They are the fundamental elements that drive many cycles that shape the planet. Consider the carbon cycle, which involves the exchange of carbon between plants and animals during photosynthesis and cell respiration. Carbon atoms are joined to other atoms, such as hydrogen, oxygen, and nitrogen, to form organic molecules. The four categories of organic molecules found in the human body are lipids, proteins, nucleic acids, and carbohydrates. Energy is generated through the consumption of carbohydrates.
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f differential erosion exists a region, which of the following is true? a) it is likely to be a humid region with minimal weathering. b) it is likely to be a humid region of sandstone rocks. c) it is likely to be an arid region of massive igneous rocks. d) it is likely to be an arid region of multiple sedimentary layers.
If differential erosion exists in a region, it's likely to be an arid region of multiple sedimentary layers.
Differential erosion is a type of erosion that occurs at irregular and varying rates. It's caused by the resistance and surface hardness difference in the materials that are being eroded. Softer and weaker ones will be eroded more quickly than the harder ones.
When differential erosion occurs, it most likely happens in an arid region that has multiple sedimentary layers. Multiple different sedimentary layers mean multiple different materials, each having its own hardness and erosion rate. Various erosion rates then will occur, showing differential erosion.
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the arctic and antarctic sea-ice extents are both changing. one important influence on how sea ice extent changes through time (in response to global mean sea-surface temperature rise) is the surroundings. whereas the arctic sea ice is surrounded by continental crust not covered by glaciers (with the exception of greenland), the antarctic sea ice surrounds a continent that is almost entirely covered by glacial ice.
The correct answer is Arctic sea ice has declined over the past five decades, while Antarctic sea ice has increased, and then declined.
Sea ice's surface albedo decreases as it melts at the surface, increasing the amount of solar energy absorbed by the ice surface and accelerating ice melt. By creating a barrier between the cooler air above and the warmer water below, sea ice also helps to keep the air cool. Penguins, seals, and other creatures depend on the Antarctic sea ice as part of their ecosystem. Sea ice cover has decreased globally as a result of warmer air and ocean temperatures. Less ice means less heat is reflected, which leads to more severe heatwaves everywhere. But it also means more severe winters because warmer air can cause the polar jet stream, a high-pressure wind that circles the Arctic region, to drop south and bring harsh cold with it.
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