Answer:
1. C -make food into energy
2. C - cellulose
3. B - organelles
competition plays a very important role in ecology and evolution. The best competitors are the ones who survive and get to pass on their genes.
Answer:
DNA sequences similarity among various organisms may be used to establish evolutionary relationship among living organisms. ... Organisms or animals whose DNA sequences are similar share common evolutionary origin.
Explanation:
There is no pigment in the brain, so it is in it's natural colour, grey.
Adaptation would make the most sense
