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7th Biomes
| Term | Definition |
|---|---|
| biome | a large area of Earth that has its own kind of climate, soil, plants, and animals |
| climate | the weather in an area over a long period of time; the primary factor that determines the type of biome in an area |
| tundra | a biome with very harsh winters, low average temperature, little moisture, and a short summer season |
| arctic tundra | a biome in the arctic areas of the world near the poles and is influenced by permafrost |
| alpine tundra | a biome found in the mountains at an altitude above the tree line |
| tiaga | a cold biome, stretching across the northern portions of North America, Europe, and Asia close to the tundra |
| deciduous forests | a biome with a moderate climate, a long growing season, and cold winters, found in the eastern half of North America, the middle of Europe, and Eastern Asia |
| tropical rain forests | biome with warm and humid climate, lots of heavy rainfall, found along the equator |
| grasslands | biome found in the middle latitudes in the interiors of the continents, where annual precipitation is great enough to support mostly grasses |
| deserts | biome having a cold or hot climate, found in 1/5 of the Earth's land area, and that support few plants and animals |
| marine | water biomes that can be saltwater such as oceans and seas, or freshwater, including lakes, streams, rivers, and ponds |