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15 Cards in this Set
- Front
- Back
Biogeochemical Cycle |
a pathway by which a chemical substance moves through both biotic (biosphere) and abiotic (lithosphere, atmosphere, and hydrosphere) compartments of Earth. |
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Ground Water |
water held underground in the soil or in pores and crevices in rock. |
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Transpiration |
the process where plants absorb water through the roots and then give off water vapor through pores in their leaves |
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Precipitation |
rain, snow, sleet, or hail that falls to the ground. |
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Runoff |
the draining away of water (or substances carried in it) from the surface of an area of land, a building or structure, etc. |
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Evaporation |
the process of a liquid changing into a gas |
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Percolation |
the process of a liquid slowly passing through a filter |
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Nitrogen Fixation |
the chemical processes by which atmospheric nitrogen is assimilated into organic compounds, especially by certain microorganisms as part of the nitrogen cycle. |
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Respiration |
a process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances. |
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Combustion |
rapid chemical combination of a substance with oxygen, involving the production of heat and light. |
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Erosion |
the process of eroding or being eroded by wind, water, or other natural agents. |
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Assimilation (biology) |
the combination of two processes to supply cells with nutrients |
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Ammonification |
decomposition with production of ammonia or ammonium compounds especially by the action of bacteria on nitrogenous organic matter. |
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Nitrification |
the biological oxidation of ammonia or ammonium to nitrite followed by the oxidation of the nitrite to nitrate |
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Denitrification |
the loss or removal of nitrogen or nitrogen compounds; specifically : reduction of nitrates or nitrites commonly by bacteria (as in soil) that usually results in the escape of nitrogen into the air. |