| A | B |
| Producers | use energy of the sun to make food |
| Habitat | includes only abiotic factors |
| Soil | Rainfall influences a biome by first affect this |
| Niche | an organism's role in the flow of energy through an ecosystem |
| An ecosystem can be very large or very | small |
| Water is an | abiotic factor |
| Aquatic biome | biome that is water based |
| Biome | an area with a similar climate that contains similar plants and animals |
| These are recycled in an ecosystem | matter and nutrients |
| Migration | movement of organisms into and out of an area |
| Energy in an ecosystem passes from producers to | consumers |
| The most important factor in determining a biome | climate |
| The soil in a biome determines the | type of plants |
| The plants in a biome determines the | type of animals |
| Once a niche is left vacant | other organisms compete for that niche |
| Biogeochemical cycle | nutrients recycling through an ecosystem |
| Invasive species and humans | causes for habitat destruction |
| No two species can occupy the same | niche |
| Climate | typical weather in an area over a long period of time |
| Abiotic factors influence | biotic factors |
| Terrestrial biome | a land biome |
| All ecosystems | need energy |