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12 Cards in this Set
- Front
- Back
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Biogeochemical Cycle |
substances such as water, carbon, nitrogen, calcium and phosphorus that pass between the living and nonliving worlds. |
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Ground Water |
water in the soil or in the underground formations of porous rocks. |
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Water Cycle |
the movement of water |
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Transpiration |
when water evaporates from the leaves of plants in terrestrial ecosystems |
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Carbon Cycle |
formed by Photosynthesis and Cellular Respiration |
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Nitrogen Cycle |
complex pathway that nitrogen follows in an ecosystem |
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Nitrogen Fixation |
process of converting N2 gas to nitrate |
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Nitrogen-Fixing Bacteria |
relied on by most organisms to transform nitrogen gas into a usable form |
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Ammonification |
decomposers breaking down waste containing nitrogen and releases it. |
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Nitrification |
soil bacteria take up ammonium and oxidize it into nitrates |
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Denitrification |
occurs when anaerobic bacteria breaks down nitrates and release nitrogen gas into the atmosphere |
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Phosphorus Cycle |
the movement of phosphorus from the environment to organisms the then back to the environment |
