Answer:
How does analyzing ice benefit scientists who study ancient climates? Check all that apply.
Ice is one of the best preservers of prehistoric life remains.
Scientists have identified several major ice ages from fossils.
Scientists can drill deep into the ice to collect ice cores.
Pollen grains in ice help make inferences about the climate area.
Scientists can study tree rings in ice to learn more about pas
When a cow eats hay how much of
the hay's original energy is
recovered by the cow?
Answer:
10%
Explanation:
We use the energy pyramid to figure this out:
.01% - A pex Predators
0.1% - Tertiary Consumers
1% - Secondary Consumers
10% - Primary Consumers
100% - Primary Producers
Cows are primary consumers, as they eat grass and hay (which are primary producers). So however much they eat of grass and hay, you multiply by 10% to get the total amount of energy that the cow gets.
What must happen before mistosis can being?
Answer:
The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. In this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells
Answer:
The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. In this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells.
Which statement describes the role of a mitochondrion in providing a body with energy? It stores glucose that is taken from food so that respiration can happen later. It combines blood and oxygen so that energy can be released from glucose. It is the site where oxygen combines with small molecules and releases large amounts of energy. It is the site where food is broken down into small molecules and amounts of energy.
Answer:
3. It is the site where oxygen combines with small molecules and releases large amounts of energy.
Explanation:
Mitochondria is a cell organelle
It produces ATP, which is considered as energy currency of cell.
Answer:
C
:D
Explanation:
Represente, por meio de esquemas: A. Raízes com estrutura primárias e com estrutura secundária; B. Caules com estruturas primária e com estrutura secundária.
Answer:
Explanation:
respondeu em inglês. obrigado
What is a nebula? A. The core of a massive star B. A cloud of gas and dust in space C. A swirling disk with a lot of gravity D. The debris remaining after a supernova
Answer:
its B. a cloud of gas and dust in space
Nebula is a cloud of gas and dust in space. The correct option is B.
What is special regarding nebula?A nebula is a distinct luminescent component of the interstellar medium that can be composed of ionized, neutral, or molecular hydrogen, as well as cosmic dust.
When stars form within a nebula, they emit a stream of charged particles known as stellar wind.
Massive stars and young stars have stellar winds that are much stronger than the Sun's.
When the wind collides with the gas in the nebula, it creates shock waves or hydrodynamic instabilities, which shape the gas clouds.
Nebulae are frequently star-forming regions, as seen in the Eagle Nebula's "Pillars of Creation."
Thus, the correct option is B.
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1. It is the state of matter that is very compressible a. liquid b. solid c. gas d. Plasma NEED HELP GUYS
Answer:
C
Explanation:
In general, Gases are the most compressible and solids are the least compressible.
Answer:
In general, Gases are the most compressible and solids are the least compressible.
Explanation:
The main reason for this is the intermolecular forces which determine the physical state of a substance by altering the intermolecular spaces. hope this helps you :)
Importance of freezing stem cells in South Africa?
Answer:
Stem cells are special cells found in the human body which has the ability to change into different cell types and functions.
They are expensive in South Africa and are freezing the stem cells helps in the preservation of the cells for research works in the medicine. They are also used in the treatment of different illnesses which requires cells and tissue transplants.
3) The most common form of color-blindness - red/green color-blindness - is an X-linked recessive trait affecting around 8% of the male population in the US. What proportion of females would you expect to have this trait?
Answer:
0.08, because for an X-linked trait the genotype frequencies among males are the same as the allele frequencies. Therefore, you would expect about q2 = 0.0064 (or 0.64%) of the female population to be affected and 2pq =0.147 (or 14.7%) of the female population to be carriers.
Explanation:
The ocean and the atmosphere serve as long-tem storage areas for carbon and others
storage areas called?
Answer: reservoirs
Explanation: because
Answer:
Resivorse
Explanation:
1 Point
Salmon feed on shrimp, and humans eat salmon. Which role do both shrimp
and salmon play in this situation?
A. Host
B. Prey
C. Predator
D. Parasite
Answer: B. Prey
Explanation:
The shrimp is the prey (or food) of the salmon and the salmon is the prey of humans.
Answer:
B
Explanation:
A nonnative species of squirrel is introduced into a forest. Which would most likely prevent this squirrel from becoming an invasive species?
A. There are no natural predators for the squirrel in this ecosystem.
B. The squirrel must compete with stronger organisms for resources.
C. The forest ecosystem has very low biodiversity.
D. The squirrel is able to reproduce quickly in this ecosystem.
Answer:
B
Explanation:
competing with stronger organisms makes it difficult for the squirrel to be invasive
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If a nonnative species of squirrel is introduced into a forest, one of the things that can prevent it from reaching an invasive status is if the squirrel competes with stronger organisms for resources.
Competition is one of the factors that limit the growth of organisms' populations.
All other factors being equal, a combination of some of the following will make the squirrel attain an invasive status:
The absence of natural predators means that the squirrel's population is not threatened in any way.Low biodiversity in the forest ecosystem means that the squirrel will experience very little to no competition for resourcesReproducing quickly in the ecosystem means that the population will boom in no time.More on invasive species can be found here: https://brainly.com/question/22117564
Create three relevant questions that you would like answered or clarified about the role of DNA and chromosomes. Focus on the following areas as you generate questions: The cause and effect relationship between the genetic code and gene expression Mechanisms of gene regulation The role of DNA segments that do not code for proteins
Answer:
Chromosome is made up of protein and DNA molecule.
Explanation:
Chromosome is a thread like structure which is formed from protein and one molecule of DNA. It is present inside the cell of both plant and animals. DNA is a heredity material which contains all characteristics of an organism. Genetic code are codes which contains information about the formation of a specific protein while gene expression is a process in which genetic code is used for the synthesis of proteins. There is no specific role of DNA segments that do not code for proteins but some scientist belief that it control the activity of the gene.
What do Scientists use tools for
The nurse is observing a set of new parents to ensure that they are bonding with their newborn. What displayed behavior would indicate that the parents bonding is maladaptive?
Answer:
Neglecting the child
Explanation:
Maldatives behaviors are the behaviors that do not facilitate the parent-infant bonding, meaning that they are those behaviors that are hindering the process. And the best way of removing that is to encourage the behaviors that counter them.
The process of pointing out the responsiveness of the infant is a positive strategy for facilitating parent-infant attachment. Telling the mother that she must pay attention to her infant may be perceived as derogatory and is not
appropriate. Educating the mother in infant care is important; however, pointing out the responsiveness
of her baby is a better tool for facilitating mother-infant attachment. .
What are vectors and list the diseases that are caused by them.
Explanation:
vectors are living organisms that transmit infectious pathogens between humans,or from animals to humans.
malaria
plague
relapsing fever
Aside from being a good marksman, what is the key to making a clean kill?
A
luck
B
patience
C
range
D
weather
Answer:
C. range
Explanation:
Being a good marksman requires a very good range of whatever target you intends to shoot.
the main respiratory surface in man is; Select one: A. alveolar wall B. internal nostrils C. bronchial wall D. tracheal wall
Answer:
answer is alveolar wall
Answer:
Option A
Explanation:
Alveolar Wall forms the main respiratory surface where exchange of gass happens.
What role to 'epigenetics' have to do in genetic expression?
Answer:Epigenetics is the study of heritable changes in gene expression (active versus inactive genes) that do not involve changes to the underlying DNA sequence — a change in phenotype without a change in genotype — which in turn affects how cells read the genes.
Explanation:Epigenetics is the study of heritable changes in gene expression (active versus inactive genes) that do not involve changes to the underlying DNA sequence — a change in phenotype without a change in genotype — which in turn affects how cells read the genes.
Type several paragraphs describing the full carbon cycle in detail. i. Discuss all components of your poster, as outlined in step 3. ii. Describe the exchange of carbon through carbon-containing compounds between an organism and the environment. iii. Describe the contributions of photosynthesis and cellular respiration within and among the four spheres. Discuss how carbon enters and leaves each of the four spheres and in what forms. iv. Discuss the role of carbon storage in organisms. b) Click “Enter” on your keyboard a few times to leave enough space to answer the following question. i. How is a model of the carbon cycle different from the actual cycling of carbon in an ecosystem? c) Make sure your paragraphs include correct sentence structure, punctuation, grammar, and spelling. d) Ask your teacher where you should save your work. Your teacher may also have specific guidelines about the file name you should use.
Answer:
The carbon cycle is nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again. Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms
Explanation:
From Earth, Jupiter appears to be very bright in the night sky because it is Select one: a. very large and reflects a lot of sunlight. b. one of the hottest planets in the solar system. c. almost as close to Earth as Venus, the brightest planet. d. None of these. Clear my choice
Answer:
1
Explanation:
why ?
size - very large compared to other planets
Its relative closeness (compared to other stars)
High reflective albedo of the light colored clouds
The fact that it is never inside Earth's orbit means that it is always mostly illuminated from our point of view regardless of relative positioning.
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Jupiter looks so vivid because of its massive length, and due to the fact the clouds that pinnacle its atmosphere replicate greater than half of the sunlight that moves them.
So the best solution is choice a. very huge and reflects a variety of daylight.
How brilliant is Jupiter in the nighttime sky?With a magnitude of -2.nine, Jupiter is the 0.33 brightest item in the night skies. simplest Venus and our moon are brighter. that still way it is very smooth to identify with the eye.
Why does Jupiter seem brighter than Mercury?Mercury seems so shiny because it's fairly close to Earth and to the sun. So it gets a whole lot of daylight, and it displays a good amount of it in our path. Jupiter looks so vibrant due to its massive length, and due to the fact the clouds that the pinnacle of its atmosphere mirror extra than half of the sunlight that strikes them.
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What is the most common
way that active transport
occurs in the cell?
A. Particles flow into the cell through
holes in the cell membrane.
B. Pumps embedded in the cell membrane
use energy to bring particles into the cell.
C. Particles simply follow the
concentration gradient.
D. Organelles leave the cell, gather
particles, and bring them back into the
cell.
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Answer:
Es la B.
Explanation:
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Help!!!! :( please !
Answer:
1. May
2. September
3. February and December
4. 42°F
Explanation:
Reviewing the given data for the weather of Alexandria, Virginia as shown in the data set attached, we have the following:
1. The month with the most precipitation is MAY (3.99 on average)
2. SEPTEMBERhas a record low of 36° F
3. FEB. and DEC both have an average high of 47°F
4. Difference in °F between record high and record low in October = 68°F - 26°F = 42°F
How is the growth of land plants proof that there is carbon in the atmosphere? How does carbon exist in the atmosphere, biosphere, and geosphere all at the same time? (Site 1 )
Plants take the CO2 from the atmosphere which is used in Calvin's cycle to synthesize organic compounds that end up building the plant. This fact can be proved by marking the atmospheric CO2 with radioactive isotopes of carbon, afterwards using a Geiger counter the plant will present radioactivity.
The carbon in the atmosphere is most commonly found in the form of CO2
it has a concentration of 0.04%.CO2 is a byproduct of aerobic respiration
or combustion, for example, C6H12O6+6O2-->6CO2+6H2O. The CO2 is then used by plants in photosynthesis as mentioned earlier.
Carbon is present in the biosphere because all life is made of carbon.
Carbon is present in the geosphere most commonly under the form of hydrocarbons like methane(CH4). The carbon present in geosphere is a result of organisms decay and metabolic byproducts. For example, methanogen bacteria synthesize methane in anaerobic conditions reducing hydrogen in the presence of CO2(CO2+4H2⇒CH4+2H2O). Carbon in the geosphere can also be found in coal that becomes diamond under extreme pressure and temperature.
Carbon element exists in various parts of the atmosphere in the form of gases such as carbon dioxide. The growth of land plants proof that there is carbon in the atmosphere as they perform photosynthesis.
What is Atmospheric carbon?The atmospheric carbon refers to the carbon dioxide which is present in the atmosphere. The main source of this carbon dioxide is respiration in animals.
There is an exchange of carbon from the atmosphere, vegetation, soils and the organic matter of the atmosphere, ocean and fossil fuels all of these are continually changing. The carbon cycle is the cycle through which carbon is exchanged among the various parts of the globe that is the biosphere, geosphere, and atmosphere of the Earth.
The growth of land plants is a proof that there is carbon present in the atmosphere because the land plants use carbon dioxide and water to grow. Carbon dioxide and water are both the gases and important part of the atmosphere, so when they are combined they usually form a liquid. This liquid is then absorbed by the plants and they use it to make their own food through photosynthesis.
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Which types of measurement are used to describe quantities of heat and temperature ?
Answer:
There are three different systems for measuring heat energy (temperature): Fahrenheit, Celsius, and Kelvin. In scientific measures, it is most common to use either the Kelvin or Celsius scale as a unit of temperature measurement.
Explanation:
Hope this helps you!
Research wolff's law. how does the formation of torus mandibularis relate to this theory?
Answer:
According to wolff (German Anatomist and Surgeon),the adaptation shown by a bone in an healthy animal or human depends on the loads it bear.Therefore, changes in the structure or type load the bone bears, will lead to a corresponding change in the bone bearing the load.A practical example is the development of the bone in hand used by a professional tennis player to hold racket.The bones of this hand usually appear stronger and well developed than the other hand.
When a bony outgrowth, emerges in the mandible close to the surface of the tongue, this outgrowth is called Torus mandibularis. It is commonly found near the premolars, in a bilateral conditions. It is common among the Asian and the indigenous people of Canada, Greenland and Alaska(the Inuit).
If it is caused by bruxism (teeth grinding)This will create stress on the impacted bone.Therefore based on Wolff's theory, the impact of this local stress,(teeth grinding) may cause transformation in the shape of the part of the mandible associated with the teeth,an therefore leads to the bony outgrowth.
This theory may also be interpreted with Lamarck theory of use and disuse.
The formation of the torus mandibularis relates to this theory - this bone help in adapt the extra stress by grinding teeth.
Wolff's lawThis law states that if a bone is under continuous stress or load, then internal as well as external structural changes would take place in the bone that helps to adapt the bone to bear increased mechanical stress.
Torus mandibularis is a bony extension near the base of the tongue. Due to the continuous grinding of teeth the load on the underlying bone increases. Torus mandibularis helps to cope with extra stress caused due to grinding of teeth.
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In order to produce all the protein that a cell needs, transcription takes place __________. * a. using single-stranded RNA b. using double-stranded RNA c. on a gene segment only once d. on a gene segment over and over again
Answer: on a gene segment over and over again
These proteins are produced by cells by the transcription and translation of certain genes from their DNA into molecules of messenger RNA (mRNA), chains of amino acids, and finally fully functioning proteins. Thus, option D is correct.
What gene involve to produce protein that a cell needs?The act of translating mRNA into tRNA, which participates in transcription, can be thought of as the decoding of instructions for building proteins.
The right time must be chosen for the production of proteins required for cellular function. All cells use information encoded in their DNA to control or regulate the synthesis of proteins. Gene expression is the process of activating a gene to produce RNA and protein.
Therefore, In order to produce all the protein that a cell needs, transcription takes place on a gene segment over and over again
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The proximate (immediate) source of energy for oxidative phosphorylation is _____. The proximate (immediate) source of energy for oxidative phosphorylation is _____. kinetic energy that is released as hydrogen ions diffuse down their concentration gradient ATP synthase NADH and FADH2 substrate-level phosphorylation ATP
The source of energy is the electron derived from the FADH₂ and NADH combined with oxygen.
What is oxidative phosphorylation?The oxidation of substrates and the synthesis of ATP are processes that are connected during oxidative phosphorylation, which takes place in the mitochondria of all animal and plant tissues.
The two carrier molecules NAD or FAD transfer hydrogen ions (or electrons) to the electron transport pumps as the Krebs cycle is running. ATP, NAD+, and FAD+ are the products of oxidative phosphorylation.
The source of energy is the electron derived from the FADH₂ and NADH combined with oxygen. The kinetic energy that is released as hydrogen ions diffuse down their concentration gradient ATP synthase NADH and FADH2 substrate-level phosphorylation ATP
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Which correctly lists three main causes of deforestation?
A.) air pollution, mining, logging
B.) mining, cattle ranching, logging
C.) cattle ranching, water pollution, air pollution
D.) water pollution, logging, mining
Answer:
B
Explanation:
Took the test 2021
This lab activity is designed to explore the effect of two substances on the heart rate of a Daphnia magna specimen. One of the activities in this lab is to measure the heart rate when the Daphnia is exposed to alcohol. In the experimental setup, what would be the independent variable?
Answer is given below
Explanation:
Heart rate was studied in this experiment and is the dependent variable studied or measured. This is a dependent variable. An independent variable is a variable whose modulation is not affected by any other variable in the experiment. Here is the alcohol independent variable. Other substances such as intelligence are also independent variables.a
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Change the stimulus to read: Edward Jenner?'s smallpox inoculation experiment was based on his observation that
dairymaids who had had cowpox did not contract smallpox. How did Jenner form his hypothesis from this observation?
He asked what would happen if he inoculated a person with cowpox fluid and then later with smallpox fluid.
He tested different existing inoculations to see which one was most effective in preventing smallpox.
He observed dairymaids who had contracted cowpox to see whether they became immune to smallpox.
He drew a conclusion about dairymaids who got cowpox becoming immune to getting smallpox.
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Answer: It's A
Explanation: