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Ch. 22 7th Grade
Biomes and Ecosystems
| Term | Definition |
|---|---|
| biome | geographic area on Earth that contains ecosystems with similar biotic and abiotic features |
| desert | biome that receives very little rain |
| grassland | biome where grasses are the dominant plants |
| taiga | forest biome consisting mostly of cone-bearing evergreen trees |
| temperate | region of Earth between the tropics and the polar circles |
| tundra | cold, dry, and treeless biome that has a layer of permanently frozen soil |
| coral reef | underwater structure made from skeletons of tiny, soft-bodied animals |
| estuary | region along a coastline that forms where streams or rivers flow into a body of salt water |
| intertidal zone | area of ocean shore between the lowest low tide and the highest high tide |
| salinity | amount of salt dissolved in water |
| wetland | aquatic ecosystem that has a thin layer of water covering soil most of the time |
| climax community | stable community that no longer goes through major ecological changes |
| ecological succession | process of one ecological community gradually changing into another |
| eutrophication | process of a body of water becoming nutrient-rich |
| pioneer species | first species that colonize new or undisturbed land |
Created by:
SSmith01
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