ecosystem

1. factors Living things within an ecosystem
4. The path of energy in food from one organism to another
7. Any close relationship between species, including mutualism, commensalism, and parasitism
10. An animal that is hunted and caught for food
11. An animal that eats both plants (producers) and animals (consumers)
13. A living thing that gets energy by breaking down wastes and dead plants and animals
14. An animal that eats only plants (producers)
16. The area in which an organism lives; it provides food, shelter, etc. needed for survival
17. Organism that cannot make its own food; it must get energy by eating; heterotroph
19. factors Non-living parts of an ecosystem (ex. air, water, soil, rocks)

2. One of any living thing
3. The overlapping food chains and interconnected feeding relationships in a community
5. An animal that feeds on the remains of dead animals
6. Living things that make their own food (ex. plants, grasses, trees, etc.); autotroph
8. The study of how living things and their environment interact
9. An animal that eats only other animals
12. All the organisms of one species that live in an area at the same time
15. All the populations living in an area
18. The role of an organism in its community; it refers to the unique ways an organism survives