Biology

2. Use of living organisms to help clean pollution.
4. The first organisms to live in a new habitat (lichens and mosses).
5. North or south of equator (toward north or south pole).
7. Study of human population’s size, density, age.
11. The last member of a species dies.
12. Max number of individuals an environment can support (logistic curve S).
13. The dry weight of all the organic matter in an ecosystem.
14. The variety of life in an area.
15. Restricts the number of organisms in an ecosystem.

1. The way in which individuals are spread in an area (clumped, random, uniform).
3. Movement of individuals out of a population.
6. Movement of individuals into a population.
8. A community and the physical aspects (living things plus non-living).
9. Excessive use of a species with economic value.
10. An animal that eats primary producers (plant eater).