ECOLOGY

4. ability of a living system to be restored through secondary succession.
7. the dimly lit middle zone, does not contain photosynthesizing producers.
8. a colorless and suffocating gas, also comes from volcanoes.
9. occur mostly in the areas that are too moist for deserts and too dry for forests.
10. the arrangement of its atoms or ions within molecules does not change.
14. processs which specialized bacteria can convert simple inorganic compounds.
16. Restrict coastal locations for fish farms, control pollution more strictly
18. average number of children born to women in a population during reproductive years.
21. an increase in a nation’s output of goods and services.
22. The extinction of many species in a short period of geologic time
23. the area of ocean needed to sustain the consumption of an average person or the world.
24. occurs when two or more processes interact, the combined effect is greater than before.
25. two species arise from one.

1. the distribution of males and females among age groups in a population.
2. natural warming effect of the troposphere.
3. is the temporary or permanent removal of large expanses of forest
5. are new discoveries and new ideas that can overthrow a well-accepted scientific theory or law.
6. process whereby earth’s life changes over time through changes in the genes of populations.
11. country's rarest and most imperiled species are concentrated in a few areas
12. Functions of nature such as purification of air and water, which support life and human economies.
13. excessive nutrients into the lake.
15. occurs when people are unable to meet their basic needs.
17. is an extremely hot fire that leaps from treetop to treetop or whole burning trees
19. consists of the parts of the earth’s air, water, and soil where life is found.
20. an interaction that benefits one species but has little effect on the other.