I believe the correct answer is a. mutations.
Answer:
4
Explanation:
2+2=4. It is a very complex equation. Hope this helps!
-Aslina
Variation- Heritable differences that exist in every population are the basis for natural selection
Overproduction- Competition for resources for resources
adaptation- A trait that helps an organism survive and reproduce
decent with modification- Natural Selection will result in species with adaptation that are well suited for survival and reproduction.
Answer:
Earth’s crust is pushed up in big folds or forced up or down in blocks. So your answer is "By earth's crust being uplifted." Please mark as brainliest, hope this helps!
Answer:
its gives us oxygen witch most thing take to stay alive
