| A | B |
|---|
| biome | large geographic regions in many locations with similiar kinds of communities and climates |
| cabon dioxide - oxygen cycle | circular pathway in which carbon dioxide and oxygen move through the environment |
| desert | biome with high daytime temperatures and little rainfall. |
| ecosystem | an area for study of how organism and nonliving material act together. |
| energy pyramid | a diagragm that compares the amount of energy available at each level of feeding order in a community. |
| estuary | the place where salt water mixes with freshwater |
| freshwater biomes | water biome that has a low salt content |
| grassland | biome characterized by few trees and many grasses |
| latitude | distance north or south of the equator |
| nitrogen- cycle | circular pathway in which nitrogen moves through the environment. |
| permafrost | ground that is permanently frozen |
| saltwater biome | water biome that has a high salt content |
| taiga | biome just south of the tundra characterized by conifers |
| temperate deciduous forest | biome characterized by trees that lose their leaves each year. |
| tropical rain forest | biome that has rainfall and high temperatures all year |
| tundra | the northernmost and coldest land biome |
| water cycle | circular pathway in which water moves through the envirnonment |
