| A | B |
|---|
| producer | an organism that makes its own food |
| consumer | an organism that gets energy by consuming other organisms |
| herbivore | a consumer that eats only plants |
| carnivore | a consumer that eats only meats |
| omnivore | a consumer that eats both plants and meats |
| scavenger | an organism that eats the dead remains of other organisms |
| decomposer | an organism that breaks down wastes and dead organisms |
| food chain | a series of events in which one organism eats another |
| food web | a pattern of overlapping food chains in an ecosystem |
| energy pyramid | a diagram that shows the energy that moves from one level to the next in a food web |
| biogeography | the study of where organisms live |
| dispersal | the movement of organisms from one place to another |
| native species | species that have naturally evolved in an area |
| exotic species | species that are carried to new locations |
| biome | a group of ecosystems with similar climates and organisms |
| permafrost | soil that is frozen all year |
| deciduous tree | a tree with leaves that fall off |
| coniferous tree | a tree with cones and needles instead of leaves |
