Answer:
Variation allows some individuals within a population to adapt to the changing environment. Because natural selection acts directly only on phenotypes, more genetic variation within a population usually enables more phenotypic variation.
Explanation:
Hope this helps
The ovaries are a part of the endocrine system, so its true.
(4) organisms in a changing environment must adapt to acquire necessary traits and survive
About 93 million miles or 150 km or 8 light minutes (don't know what that means)
