Describe the amount of sunlight at the poled and at the equator throughout various times of the year. Why does this occur?
Answer:
Neither of the poles are tilted towards the sun. Hence, the sun rays fall directly on the equator due to which all the places on the Earth experience equal daylight hours and equal night time hours that is, 12 hours of day and 12 hours of night on all the places of the Earth.
Answer:
The fact that the equatorial Sun is always so close to the zenith at solar noon explains why the tropical zone contains the warmest regions on the planet overall. Additionally, the Equator sees the shortest sunrise or sunset because the Sun's path across the sky is so nearly perpendicular to the horizon.
Explanation:
i think this might help
Which of the following environmental factors would positively influence the survival and reproduction of only light peppered moths?
A.
A forest fire that burns down the trees.
B.
Laws that improve air quality and restrict pollution.
C.
Increasing the number of factories that burn coal into the air.
D.
A disease that infects the light peppered moths and not the dark.
Answer:
The correct answer is - option B. laws that improve air quality and restrict pollution.
Explanation:
The dark peppered moths were the adaption of the light peppered moths due to the change in the environmental condition of increased pollution that made tree bark dark in color and allows birds to easily prey on the light peppered moths.
This leads to natural selection and light moths become dark but the after Clean Air Act was that there was less pollution then there is less soot in the air, so trees were less black which result in the Light-colored moths would increase, and dark-colored moths would decrease.
Story #1
Once upon a time, there lived a population of mountain people whose members all had wings but different
types-either bat wings or bird wings. 40% of the population had bat wings and 60% of the population had bird
wings. One day, a storm hit that lasted for several weeks. Those with bat wings were able to fly around and
find food because their wings were water resistant, while those with bird wings were not able to get food
because their feathers were not water resistant and got soaked through. Many of the bird-winged people starved
and did not survive, so their alleles decreased in the gene pool, lowering the frequency of the bird wings in
future generations. Over many generations, the environment had more and more long periods of rain and the
genetic makeup of the population shifted to 10% with bird wings and 90% with bat wings.
What is the trait being described?
What are the variations that exist in this population?
3. How did the event lead to the change in allele frequency?
Alleles?
4. What type of evolutionary mechanism did this story show?
5. Was there an adaptation in this story? If so, identify it.
6. Did the change make the population more or less similar to other populations?
7. Would this increase or decrease reproductive isolation?
Increase or decrease speciation?
8. Did the new population change for the better, worse, or have no effect? Why?
Answer:
The trait being described is the ability to fly in rainy season.
Explanation:
The trait being described is the ability to fly in rainy season. The people with bat wings and people with bird wings are present in the population. The event lead to the change in allele frequency because the population of people with bird wings die due to starvation. Yes, the bat wings were adapted to that environment so they are able to survive. The change make the population less similar to other populations because population of people with bat wings increases as compared to other population. Yes, the new population change for the better of the ecosystem because the population is able to controls the population of other species in the ecosystem.
Team of scientists is studying several plant species that they think could become new farm crops. The scientists want to apply selective breeding to develop one of the species into useful crop plants. Which property of a plant species would be MOST USEFUL for meeting the scientists' goal? A. very low genetic variation B. very high genetic variation C. producing only a few fruits and seeds each growing season
Answer:
B. very high genetic variation
Explanation:
Selective breeding is the process by which crops or animals with desired phenotypic traits are chosen to produce offspring, which will contain the desired qualities. In this case, a group of scientists is trying to apply the principles of selective breeding to develop a particular crop plant.
This goal of producing a useful crop plant by the scientists can only be achieved when the plant species in question possess a HIGH GENETIC VARIATION i.e. difference in genetic constitution of individuals of the same species. This allows the individuals in the population to survive better.
Answer: It is b
Explanation:
Sarah is finishing a model drawing of a cell. She adds a membrane to the nucleus on her model. The nucleus of a cell has a membrane that isolates
material inside of it from the rest of the cell. Why does the nucleus need a membrane?
A.
The membrane helps the nucleus to create energy for the cell.
B.
The membrane helps the nucleus to create proteins for the cell.
C.
The membranes helps the nucleus to remove waste from the cell.
D.
The membrane helps the nucleus protect genetic material for the cell.
Answer:
C
Explanation:
a nuclear membrane is a double membrane that encloses the cell nucleus. It serves to separate the chromosomes from the rest of the cell. The nuclear membrane includes an array of small holes or pores that permit the passage of certain materials such as nucleic acids and proteins, between the nucleus and the cytoplasm .
How does absolute age relate to geologic time?
the age of Rock in years is called its absolute age geologist find absolute age by measuring the amount of certain radioactive elements in the rock
3. How many membranes does the
nucleus have?
Answer:
2 membrans
Explanation:
5. Speed is a __________ but has no direction whereas, velocity is a ______________ which includes direction. A vector has ____________ and _______________.
Speed is a scalar quantity but has no direction whereas, velocity is a magnitude which includes direction. A vector has magnitude and direction.
Answer:
. Speed is a ____scalar quantity______ but has no direction whereas, velocity is a ______vector quantity________ which includes direction. A vector has __magnitude__ and __direction___.
Which statement best describes the relationship between the bending of a ray of light and a black hole?
When light disappears, it causes a black hole to come into existence.
A ray of light has gravity that will cause a black hole to move toward it.
Gravity from a black hole will pull a ray of light and cause its path to change.
A black hole’s gravity can cause a ray of light to gain gravity and attract objects.
Answer:
number 2
Explanation:
Answer:
second option
Explanation:
. The nitrogen that exists on Earth was created by nitrogen-fixing bacteria. True or False
Answer:
Verdadero
Explanation:
Combustion is another word for?
A.Transportation
B.Respiration
C.Burning
D.Fossil Fuels
1. How will photosynthesis affect the dissolved oxygen levels in the
water?
Answer:
Vegetation- riparian vegetation directly affects dissolved oxygen by releasing oxygen into the water during photosynthesis. It indirectly affects dissolved oxygen concentrations because vegetation shading a stream may decrease water temperatures, and as temperature decreases dissolved, oxygen increases.
Hope this is fine for youUsing all the words below, write a short paragraph explain convection currents
Convection Currents
Mantle
Crust
Heat
Less dense
movement
More dense
Explanation:
Convection currents are the result of differential heating. Lighter (less dense), warm material rises while heavier (more dense) cool material sinks. It is this movement that creates circulation patterns known as convection currents in the atmosphere, in water, and in the mantle of Earth.In the atmosphere, as air warms it rises, allowing cooler air to flow in underneath. Along with the turning of the Earth, this movement of air creates winds. Winds, in turn, create surface waves on the ocean.Convection also plays a role in the movement of deep ocean waters and contributes to oceanic currents.Inside Earth, the convection of mantle material is thought to cause the movement of the overriding crustal plates, resulting in events such as earthquakes and volcanic eruptions.There is a history of global temperatures changing, but why is this change different? (1 point)
O The Earth is getting cooler everywhere instead of warmer.
There are more species on the planet this time.
O This shift in temperature is happening more quickly.
O It is not different; this is a regular shift in temperature.
Answer:
1) high water temperatures and water acidity cause coral polyps to expel algae, causing them to turn white in color
2) acidic carbon dioxide dissolves in water, lowering the water's pH
3) the shift in temperature is happening more quickly
4) to protect itself from the sun
5) the biodiversity of the water
Explanation:
should be 100% on the quick check if you put those answers
There are different ranges in temperature. Why is this change different is because this shift in temperature is happening more quickly.
Why are temperature around the world different?There are a lot of factors affecting temperature such has latitude. Most times, the places closer to the Earth's equator are said to be far warmer than those near to the poles.
The recent rise in temperature is said to be due to a new forcing. here, the greenhouse gas emissions from human activity, is said to have driven atmospheric CO2 to its highest level.
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scientists have discovered several species of insect that all contain the same DNA sequence on their second chromosome. What does this evidence suggest?
Explain the mechanisms by which sex-linked
diseases are inherited.
Answer:
Sex-linked diseases are passed down through families through one of the X or Y chromosomes. X and Y are sex chromosomes. Dominant inheritance occurs when an abnormal gene from one parent causes disease, even though the matching gene from the other parent is normal. The abnormal gene dominates.
Answer:
Sex-linked diseases are passed down through families through one of the X or Y chromosomes. X and Y are sex chromosomes. Dominant inheritance occurs when an abnormal gene from one parent causes disease, even though the matching gene from the other parent is normal.
What force creates the tides?
A. Solar Flares
B. Neptune’s gravitational force
C. Sun’s gravitational force
D. Moon’s gravitational force
Answer:
D.Moon's gravitational force.
Answer:
D) Moons gravitational force
Explanation:
Gravity and inertia act in opposition on the Earth's oceans, creating tidal bulges on opposite sites of the planet. On the “near” side of the Earth (the side facing the moon), the gravitational force of the moon pulls the ocean's waters toward it, creating one bulge.
Therefore saying, the moons gravitational force.
A pathogenic RNA molecule is called a...
capsid
Virion
Virold
prion
Theophrastus , Carl Linnaeus , Aristotle, charakan . Find the odd one
Answer:
Charakan
Explanation:
The odd one out would be Charakan.
Theophrastus, Carl Linnaeus, and Aristotle are all scientists that contributed to the science of classification of living organisms (taxonomy).
Aristotle was the first scientist to classify living organisms into plant and animal kingdoms based on the artificial system of classification.
Theophrastus was a student of Aristotle and he wrote a book, De Historia Plantarum, classifying about 480 plants.
Carl Linnaeus invented the binomial system of naming living organisms in which organisms are given two names - the species and the genus name.
Charakan has no known contribution to taxonomy. Hence, the name is the only odd one.
Some fungi and insects benefit each other; the fungi protects the insects from predators and the insects spread spores for the fungi. This is an example of a _______ relationship.
Some fungi and insects benefit each other; the fungi protect the insects from predators and the insects spread spores for the fungi. This is an example of a mutualistic relationship.
What is a Mutualistic relationship?A mutualistic relationship may be defined as a +,+ type of interaction in which both species benefit from the existence of each other. Example includes lichens, mycorrhizae association, coral reefs, etc.
In the question, the Fungi protect the insects from predators and benefit the insects to get survivability, while in return insects spread spores for the fungi and assist them in their reproduction process.
Therefore, both insects and fungi undergo a mutualistic type of relationship through which both species benefit from the existence of each other.
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Which of the following organisms lived during the Paleozoic Era?
A) dinosaurs
B) flowering plants
C) grasses
D) trilobites
D. Trilobites
Trilobites made their entrance onto the Earth's stage during the late Cambrian Period. This is the first and oldest division of the Paleozoic Era.
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How does dew form on grass?
O A. It is formed from melted frost.
O B. It is pushed out of holes in the grass.
C. It is formed on the grass from water in the air.
D. It falls as melted snow and is caught on the grass.
E. it falls like a light rain and is caught on the grass.
Answer:
Dewy Grass. Dew is a natural form of water, formed as water vapor condenses. ... This forces water vapor in the air around cooling objects to condense. When condensation happens, small water droplets form—dew.
so it's C
Explanation:
The thumbs of humans can grasp things because they are ___.
a) upright
b) opposable
c) unjointed
d) thin
Answer: b. is the correct answer opposable
Explanation:
opposable: (of the thumb of a primate) capable of moving toward and touching the other digits on the same hand.
What are 3 bases of RNA called?
Answer: Three of the bases are adenine, cytosine, uracil.
Explanation:
The 3 bases of RNA are called adenine (A), cytosine (C), and guanine (G).
What are nitrogenous bases?Nitrogenous bases are organic compounds that contain nitrogen and form the building blocks of DNA and RNA. They are a key component of nucleotides, which are the basic units of nucleic acids (DNA and RNA). There are four types of nitrogenous bases in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T). In RNA, thymine is replaced by uracil (U).
Nitrogenous bases play a crucial role in genetic information storage and transfer. The specific sequence of nitrogenous bases determines the genetic code, which carries the information required to build proteins. The double helix structure of DNA is held together by the complementary base pairing between adenine and thymine, and between cytosine and guanine. These interactions are critical for maintaining the stability and accuracy of the genetic information.
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whats the structure of pons
Answer:
A pons structure is a bulbous shape and has two main components - the basis pontis (aka basal/ventral part) and the pontine tegmentum (aka dorsal part). In Psychology the pons is the structure of the brain the acts like the "bridge"(Latin ) for the midbrain and medulla.
Explanation:
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What is natural selection and what are its effects on allele frequencies? (Due at 11:59)
In a mouse population, some mice have thicker fur than others, but there are more mice with thinner fur. The climate in which these mice live has slowly gotten colder.
Answer:
What is the question?
Explanation:
Mendel established several principles of heredity from his experiments and observations. What did he conclude regarding the inheritance of genes from parents?
This could be wrong but, he said that we take 50% from each parent.
23 from mom and 23 from dad to make up the full 46. Each of those chromosomes carry a specific genetic code.
Hope it’s right :)
If you are provided with some vegetables to cook. You generally add salt
into the vegetables during cooking process. After adding salt, vegetables
release water. What mechanism is responsible for this?
suggest one advantage of the police keeping a DNA database? (1 mark)
Answer:
To confirm DNA found at crime sites to help predict the true identity of the true perpetrator so that an innocent person is not charged
Explanation: