Ecology

3. The study of the relationship between organisms and their environment.
5. A living component of an ecosystem.
6. Pathway beginning with producers along which energy is transferred from trophic level to trophic level.
8. The interconnected food chains in an ecosystem.
10. An animal that eats both plants and animals.
12. A feeding level in an ecosystem.
13. A consumer that eats primary producers.
15. All the biotic and abiotic components of an environment.
16. The capacity for work or vigorous activity.

1. Any nonliving component of an ecosystem.
2. The aggregate of plants that grow without cultivation in a given area within a stated period of time.
4. A consumer that eats other consumers.
5. A geographic area characterized by specific kinds of plants and animals.
7. The total wild animal life of an area in the broadest sense, including wild animals, birds, fish, reptiles, insects, and smaller animal life.
9. An organism, usually an animal that feeds on plants or other animals.
11. Process by which green plants, using chlorophyll and the energy of sunlight, produce carbohydrates from water and carbon dioxide and release oxygen.
14. An organism, as a plant, that is able to produce its own food from inorganic substances.