Unit 2

3. has factories,decomposition, animal respiration, plant respiration, photosynthesis
8. automatically make their own food, using the sun
10. releases energy by breaking down food molecules
12. also known as the Calvin Cycle
13. total amount of water found on the earth
15. converts chemical energy stored in food into compounds that are more usable for the cell, site of cellular respiration
18. has N2,NH4+, nitrogen fixing bacteria living in root nodules, and decomposers
19. first step in the breakdown of glucose to extract energy for cellular metabolism
20. where life exists

1. eats only meats
2. also known as the citric acid cycle
4. eats both plants and meat
5. obtain energy by eating other organisms
6. envelope of gases surrounding the earth or another planet
7. eats only plants
9. includes the rocks and minerals
11. different organisms that work together to create a food chain
14. eats dead matter
16. process that has condensation, transpiration, precipitation, evaporation, and percolation
17. breaks down organic matter