Correct option is C. This evidence supports the claim that <u>natural selection</u><u> can produce new structures by </u><u>coupling together parts</u><u> of other </u><u>structures</u><u>.</u>
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<h3>How are gene variants involved in evolution?</h3>
Evolution is the process by which populations of organisms change over generations. Genetic variations underlie these changes. Genetic variations can arise from genetic variations (also called mutations) or from a normal process in which genetic material is rearranged as the cell is about to divide (known as genetic recombination).
Genetic variations that alter gene activity or protein function can introduce different traits into an organism. If a trait is beneficial and helps the individual survive and reproduce, the genetic variation is more likely to be passed on to the next generation (a process known as natural selection).
Over time, as generations of individuals with the trait continue to reproduce, the favorable trait becomes more and more common in a population, making that population different from the ancestral population. Sometimes the population becomes so distinct that it is considered a new species.
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True. The correct option is C.
<h3>Energy transfer in the ecosystem</h3>
Energy is transferred from lower to higher trophic levels of the food chain in any ecosystem.
In other words, energy is transferred when primary consumers feed on producers, when secondary consumers feed on primary consumers, and so on.
However, when energy is transferred through feeding from lower to higher trophic levels, a certain percentage of the energy is lost to the surroundings as heat.
In actual fact, scientists believe that about 90% (and not 30%) of the energy is lost as heat to the surrounding. Only about 10% of the energy is converted to useful energy.
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Osmosis is a process where molecules of a solvent travel through a membrane from a less concentrated solution to a more concentrated one.
We cannot drink water and water can damage the ecosystem. Water pollution can be reduced by adding filters to rivers.
