APES Biogeochemical Cycles

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Terms in this set (...)

Biotic Nitrogen Fixation
bacteria change atmospheric nitrogen into ammonia
Abiotic Nitrogen fixation
lightning changes atmospheric nitrogen into ammonia
Ammonification
ammonia turns to ammonium in the presence of water
Nitrification
nitrifying bacteria turn ammonium into nitrite
Assimilation
the incorporation into living tissue
Mineralization
return to soil through decomposition
Leaching
traveling through the soil in the presence of water
Sedimentation
the process of settling or being deposited as a sediment.
Geologic Uplift
exposing underground rocks to the surface
Weathering
The breaking down of rocks and other materials on the Earth's surface.
Evapotranspiration
The combined amount of evaporation and transpiration
Evaporation
The change of state from a liquid to a gas
Condensation
Gas to liquid
Precipitation
Any form of water that falls from clouds and reaches Earth's surface.
Infiltration
the process by which water on the ground surface enters the soil
Sublimation
A change directly from the solid to the gaseous state without becoming liquid
percolation
The downward movement of water through soil and rock due to gravity.
deposition
gas to solid
Photosynthesis
Plants use the sun's energy to convert water and carbon dioxide into sugars
Cellular Respiration
the process by which cells use oxygen to produce energy from food
denitrification
process by which bacteria convert nitrates into nitrous oxide
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