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nitrogen store
the atmosphere
nitrogen cycle steps
nitrogen fixation
nitrification
assimilation
ammonification
denitrification
what is nitrogen fixation carried out by?
bacteria, lightning
nitrogen fixation formula
N2 → NH3 (NH4)
nitrogen → ammonia (ammonium)
what is nitrification carried out by?
bacteria
nitrification formula
NH3 → NO2 → NO3
ammonia →nitrite → nitrate
what is assimilation carried out by?
plants
assimilation formula
NO3 → protein
nitrate → protein in food web
what is ammonification carried out by?
bacteria
ammonification formula
protein → NH3
protein → ammonia
what is denitrification carried out by?
bacteria (water logged soil)
denitrification formula
NH3 →N2
ammonia → nitrogen
nitrogen human impact
synthetic fertilizer = eutrophication
cars (NO2) = photochemical smog, acid deposition
nitrogen cycle order KEY
Fix NAAD (steps)
A NPAN (products)
carbon stores
fossil fuels (sink)
ocean sediment
biomass (old forest)
carbon cycle steps
(no order)
photosynthesis
combustion
cellular respiration
fossilization
decomposition
diffusion
sedimentation
carbon human impact
deforestation, carbon stored in trees released into atmosphere = less photosynthesis removing CO2 from it
fossil fuel combustion
fossil fuel combustion effects
global warming
ocean acidification
which carbon sink holds carbon compounds for the shortest amount of time?
vegetation/biomass
phosphorus stores
rock
sediment
phosphorus human impact
use of…
fertilizers
mining
guano
= eutrophication
farming practices that reduce soil erosion have what long term effect on the environment?
less algal growth will occur, because less phosphorus can runoff into waterways, making it available for the algae to use to grow
water stores
ocean
ice caps
glaciers
hydrologic cycle steps
(no order)
percolation
evaporation
infiltration
condensation
runoff
transpiration
water human impact
reduced percolation
overuse (from extracting too much water, groundwater depletion)
destruction of wetlands
pollution