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B- Unit 3 Lesson 20
Complex Ecosystem Transformations
Term | Definition |
---|---|
biodiversity | the variation among organisms in an ecosystem |
biome | distinct terrestrial region characterized by its climate and soil conditions and the species of organisms living there |
community | all the organisms living in a given area |
ecosystem | all the organisms in a given area along with the nonliving things with which they interact |
population | all members of a particular species in a given area at a given time |
tundra biome | cold, treeless biome in the Arctic, with frozen soil (permafrost) covered by lichens and mosses |
acid rain | lowers the pH level of whatever surface it lands on; can kill of many species of aquatic plants and animals, damages foliage, removes nutrients from the soil |