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20 Cards in this Set
- Front
- Back
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Form of nitrogen most usable to Plants |
NH3 |
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nitrification |
NH4 -------> NO2 |
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nitrogen fixation |
N2 ------> NO2/NO3/NH4 |
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assimiliation |
NH4 -------> plant roots |
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denitrifcation |
NO3 -----> N2 NH4 ------> N2 NH3 -------> N2 NO2 --------> N2 |
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Only element usable for animals |
NO3 |
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nitrite |
NO2 |
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nitrate |
NO3 |
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transpiration |
the process where plants release water from their leaves into the atmosphere |
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evapotranspiration |
the combined amount of evaporation and transpiration |
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carbon |
the most important element in living organism |
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role of decomposers |
breaks down dead organisms resulting in nitrogen being returned to the soil as NH3 |
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ammonification |
NH3 -----> NH4 |
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nitrogen |
a required nutrient for all living organisms to produce a number of complex organic molecules like amino acids (that are the building blocks of protein) |
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sources of sulfur |
volcanic activity; coal |
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human interference with sulfur cycle |
burning coal |
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calcium carbonate |
CaCO3 |
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eutrophication |
excessive growth of water plants and algae populations |
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reservoirs of carbon cycle |
atmosphere terrestrial biosphere oceans sediments |
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ocean acidification |
decrease of the pH of the Earth's oceans caused by the uptake of CO2 in atmosphere |
