| A | B |
|---|
| parasitism | An animal that eats plants, algae, and other producers |
| predator | A meat-eating animal that feeds on the remains of dead animals. |
| prey | An animal eats both plants and animals. |
| scavenger | A relationship between two kinds of organisms that benefits both. |
| symbiosis | A relationship between two kinds of organisms over time. |
| biome | A species that is nearly entirely gone; requires our most immediate attention to save. |
| extinct | One of the Earth's large ecosystems, with its own kind of climate, soil, plants and animals. |
| threatened species | A species that no longer exists anywhere. |
| endangered species | A species whose numbers are dwindling; requires our concern and care to increase those numbers. |
