Eating is important to your body because molecules in food contain energy that cells use to produce atp and it also supplies raw materials your body needs to build and repair tissue.
a. physical
b. chemical
c. protein
d. pellett

1. in what ways have non-native species been beneficial? 2. what are some of the hypotheses for the collapse of honeybee colonies? 3. distinguish between regional and functional extinction. 4. why is it difficult to measure background extinction rates? 5. what three factors are most important in causing extinction rates to climb?