Answer:
hello! this was posted 3 days ago, still need help??
Explanation:
Answer:
skin it protects from germs
More variation assists with survival. It increases the chance that at least some offspring of a parent survive.
The definition of Diffusion is: The movement of molecules from a high concentration to a low concentration. Many molecules diffuse across cell membranes.
I know this because I looked it up in my science text book and did some research online.
Hope I helped!
- Debbie