Environmental Unit 3

6. 1) energy can not be created or destroyed, only converted from one form to another, 2) each time you convert one form of energy to another, some energy is converted to a non-usable form
9. Each step in a food chain or food web
11. the process in cells in which oxygen is used to release stored energy by breaking down sugar molecules
13. An organism that obtains energy and nutrients by feeding on other organisms or their remains.
15. energy of motion
17. 10% of the energy is transfered from one level to the next
18. two or more atoms joined together
20. Anything that has mass and takes up space

1. A series of steps in which organisms transfer energy by eating and being eaten
2. Positively charged particles
3. stored energy
4. neutral charge
5. the exchange of matter through the biosphere
7. Organisms that make their own food
8. the ability to do work
10. Negatively charged particles
12. Plants use the sun's energy to convert water and carbon dioxide into sugars
14. Building blocks of matter
16. Organisms that break down the dead remains of other organisms
19. A pure substance made of only one kind of atom