The general theory is that mitochondria and chloroplasts began initially as separate cells that were "eaten" by larger cells, but not digested and simply passed on due to their advantages.<span />
The answer is genetic variation because crossing over leads to changing the traits inherited by the daughter cells
Answer:
<em><u>Emigration means an animal leaves its home because the habitat is no longer ideal for them and they need to find a more suitable environment. Animals that immigrate or emigrate do not return to the land they left.</u></em>
Explanation:
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