Environmental science

1. a compound found mainly in living things.
7. the energy needed to start a chemical reaction.
8. it is a latin word that means knowledge.
9. is the main element in organic compound.
11. ability to do work.
12. organized body of knowledge that is obtained by study and experimentation.
15. a substance that forms as a result of a chemical reaction.
17. the protective blanket of gases surrounding the earth.
19. unit work of energy in the International System of Units.
21. the sum of all the biochemical reactions in an organism.
22. Is a a substance that consist of two or more element
25. the concentration of hydronium ions in a solution.
26. comprises all types of water resources oceans, lakes, seas, rivers, streams, reservoirs,icecaps, glaciers, and groundwaters.
29. a substance that starts a chemical reaction.
30. the rate at which energy is used.

2. developing knew knowledge based upon old knowledge.
3. a force that holds molecules together.
4. the outer mantle of the solid earth.
5. anything that takes up space and has mass.
6. type of biochemical reactions that breakdowns molecules into smaller units and release energy.
10. these reactions build up bigger molecules from smaller ones.
13. The study of the interactions between life and its physical environment.
14. a test that is used to rule out a hypothesis or validate something already known.
16. A widely accepted hypothesis that stands the test of time. Theories are oftentested and usually not rejected.
18. is the study of energy.
20. is a pure substance.
23. needed by all known forms of life.
24. where life operates.
27. the unit of power.
28. are tiny units that make up all matter in the universe and energy what holds the nucleus together.