Nature of Life Review

4. chemical processes that break down and build up molecules in order to use energy
6. a change in the environment
8. characteristic that aids survival
11. process by which green plants make food
12. an organism consisting of only a single cell
14. sun is the source for most organisms
16. react to changes in the environment
18. an organism that makes their own food
19. basic unit of structure and function in living things

1. anything that possesses all six characteristics of life
2. change in living things over time
3. an organism that gets their energy from the food they eat
5. the ability to keep conditions inside the body the same no matter what the outside conditions are
7. reproduction that requires two parents
9. an organism made up of more than one cell
10. reproduction that requires only one parent
13. make more of a kind
15. increase in amount of living material
17. structural change the occur during an organism's lifetime