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Biogeochemical cycle
| Term | Definition |
|---|---|
| photosynthesis | the process of carbon dioxide being fixed into sugar molecules with the use of sunlight |
| cellular respiration | the process of breaking down sugar to release energy that also produces carbon dioxide |
| decomposition | the breakdown of organic material by bacteria and fungi to release nutrients back to the soil including carbon and nitrogen |
| evaporation | the process of surface water vaporizing and changing from a liquid to a gas |
| precipitation | the product of condensation of water vapor that falls to the ground |
| transpiration | the process where liquid water travels through plants to small pores under the leaves and vaporizes being released to the atmosphere |
| condensation | the change of state of water from a gas to a liquid usually occurring in the atmosphere creating clouds. |
| ground water | water beneath the earth's surface |
| denitrifying bacteria | bacteria that convert nitrates in the soil to atmospheric nitrogen. |
| nitrifying bacteria | bacteria that convert ammonia to nitrates which can be used by plants and other organisms. |
| legume | a group of plants that can convert atmospheric nitrogen to nitrates because of associated nitrogen fixing bacteria in their root nodules. |
| nitrogen fixation | the process in which atmospheric nitrogen is converted into ammonia |
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