| A | B |
|---|
| energy pyramid | a dagram that compares the amount of energy available at each position or level |
| ecosystem | a part of the world that is suitable to study in some way |
| water cycle | circular pathway in which water moves through the environment |
| carbon dioxide-oxygen cycle | circular pathway in which carbon dioxide and oxygen move through the environment |
| nitrogen cycle | a circular pathway in which nitrogen moves through the environment |
| biome | a geographic region that has a certain kind od community and a certain kind of climate |
| latitude | distance from the Equator |
| tundra | the nothernmost and coldest land biome (cold & treeless) |
| taiga | biome just south of the tundra |
| temperate deciduous forest | biome characteriezed by deciduous trees |
| tropical rain forest | a biome with much rainfall and high temperatures |
| grassland | temperatures and precipitation varies throughout the year |
| desert | high temperature and very little rainfall |
