| A | B |
| Biogeorgraphy | The study of where plants and animals live throughout the world. |
| Dispersal | The movement of living things from one place to others; spreading out. |
| Biome | A division based on climate, plants, and animals; an environment that has a characteristic type of climax community. |
| Permafrost | The layer of permanately frozed soil in the tundra. |
| Conifer | A plant, usually an evergreen tree, that produces its seeds in cones. |
| Taiga | The northernmost coniferous forest biome. |
| Canopy | The layer of a forest biome that consists of the tops of trees; the "roof" of a forest. |
| Marine Biome | The ocean biome. |
| Phytoplankton | Microscopic producers that live near the surface of the oceans and other bodies of water. |
| Freshwater Biome | The biome that consists of the Earth's bodies of fresh water, such as lakers, ponds, streams, and rivers. |
| Estuary | An environment found at the boundry between fresh water and salt water that contains a mixture of freshwater and salt water. |