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21.1
| Question | Answer |
|---|---|
| biomes | very large terrestrial ecosystems that contain a number of smaller but related ecosystems within them |
| tundra | a cold and largely treeless biome that forms a continuous belt across northern North America, Europe, and Asia |
| permafrost | a permanently frozen layer of soil under the surface that characterizes the tundra |
| tropical forest | forests that occur near the equator, known as the tropics |
| canopy | the continuous layer of treetops which shades the forest floor |
| epiphyte | plants that live on the branches of tall trees because of intense competition for sunlight |
| coniferous tree | a tree belonging to a group of tree species that bear their seeds in cones and tend to be evergreen |
| deciduous tree | a tree that sheds and regrows its leaves in response to seasonal changes |
| temperate deciduous forest | a region of forest that has pronounced seasons, moderate temperatures, and moderate precipitation; characterized by trees that shed their leaves in the fall |
| taiga | a region of evergreen, coniferous forest below the arctic and subarctic tundra regions |
| temperate grassland | a region that has cold winters and rainfall that is intermediate between that of a forest and a desert; characterized by extensive grasses and few trees |
| savannas | tropical or temperate grasslands that havee scattered deciduous trees and shrubs |
| chaparral | a biome that is dominated by dense, spiny shrubs and has scattered clumps of coniferous trees |
| deserts | areas that receive an average of less than 25 cm of rainfall per year |
Created by:
gbadger24
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