Std 15 (i think)
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Created by:
kennethhartley on December 14, 2009
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28 terms
Terms | Definitions |
|---|---|
 acid rain | rain containing acids that form in the atmosphere when industrial gas emissions (especially sulfur dioxide and nitrogen oxides) combine with water |
| aquatic biomes | largest portion of biosphere, water covers roughly 75% of the globe containing fresh water and marine water |
| aphotic zone | the part of the ocean beneath the photic zone, where light does not penetrate sufficiently for photosynthesis to occur. |
| arid | lacking sufficient water or rainfall |
| benthos | organisms (plants and animals) that live at or near the bottom of a sea |
| biomes | a community of living organisms of a single major ecological region |
| biosphere | part of Earth in which life exists including land, water, and air or atmosphere |
| clear-cutting | A logging practice in which all trees in a stand of forests are cut, leaving just the stumps |
| cold desert | desert that occurs where land at high altitudes is surrounded by mountains |
| coniferous forest | a type of forest characterized by cone-bearing, needle-leaved trees |
| conservation | the preservation and careful management of the environment and of natural resources |
| deciduous forest | A biome with four seasons, plants shed leaves in the fall and grow new ones in the spring. |
| deforestation | the removal of trees |
| desert | an arid region with little or no vegetation |
| estuary | the wide part of a river where it nears the sea |
| glacial lake | formed by glaciers that leave large lakes in long basins |
| grassland | land where grass or grasslike vegetation grows and is the dominant form of plant life |
| groundwater | water that fills the cracks and spaces in underground soil and rock layers |
| ozone | a form of oxygen that has three oxygen atoms in each molecule instead of two. protects us from dangerous ultraviolet radiation from the sun |
| permafrost | ground that is permanently frozen |
| photic zone | Portion of the marine biome that is shallow enough for sunlight to penetrate. |
| rainforest | a tropical forest, usually of tall, densely growing, broad-leaved evergreen trees in an area of high annual rainfall. |
| semi-arid | Hot dry summers and cool dry winters;little rainfall |
| surface runoff | water that flows over land until it reaches lakes, rivers, or other areas |
| taiga | The northernmost edge of the boreal forest, including species-poor woodland and peat deposits; intergrading with the arctic tundra |
| terrestrial biomes | tropical forest, savanna, desert, chaparral, temperate grassland, temperate deciduous forest, coniferous forest, tundra |
| tundra | a vast treeless plain in the arctic regions between the ice cap and the tree line |
| wetlands | Ecosystems of several types in which vegetation is surrounded by stand water during part of the year |
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