Ecology Terms Elijah Cook 7th

6. Process by which moisture is carried through plants: evaporation of water from plant leaves.
7. Relationship in which one organism is a food source for the other.
8. An organism that breaks down the cells of dead plants.
10. A pattern of growth in which the population increases, then balances.
11. The individuals of one species in a given area.
12. A system of interconnected elements, formed by the interaction of a community of organisms with their environment.
13. The environment that a species lives in.
16. An organism that enters a community they are not apart of; with no natural predators.
19. A series of organisms related by predator-prey interactions.
20. The living together of two dissimilar organisms.
21. The absence of life.

1. Only ten percent of energy will pass down a trophic level.
2. Colonization of new sites by communities of organisms.
3. Cycle by which nitrogen is converted into chemical forms.
4. An organism requiring organic compounds for its principal food source.
5. An organism that lives and feeds on dead organic matter.
9. A relationship between two species of organisms in which both benefit from the association.
14. A species that is indigenous to a community.
15. Branch of biology dealing with the relations and interactions between organisms and their environment.
17. Process by which carbon dioxide, water, and inorganic salts are converted into carbohydrates.
18. An assemblage of interacting populations occupying a given area.