APES Biogeochemical Cycles
Terms in this set (21)
Biotic Nitrogen Fixation
bacteria change atmospheric nitrogen into ammonia
Abiotic Nitrogen fixation
lightning changes atmospheric nitrogen into ammonia
ammonia turns to ammonium in the presence of water
nitrifying bacteria turn ammonium into nitrite
the incorporation into living tissue
return to soil through decomposition
traveling through the soil in the presence of water
the process of settling or being deposited as a sediment.
exposing underground rocks to the surface
The breaking down of rocks and other materials on the Earth's surface.
The combined amount of evaporation and transpiration
The change of state from a liquid to a gas
Gas to liquid
Any form of water that falls from clouds and reaches Earth's surface.
the process by which water on the ground surface enters the soil
A change directly from the solid to the gaseous state without becoming liquid
The downward movement of water through soil and rock due to gravity.
gas to solid
Plants use the sun's energy to convert water and carbon dioxide into sugars
the process by which cells use oxygen to produce energy from food
process by which bacteria convert nitrates into nitrous oxide
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