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Science
What Nutrient Cycles are Atmosheric?
carbon, nitrogen, sulfur
What Nutrient Cycles are Sedimentary?
phosphorus
Hydrologic Cycle is also called the?
water cycle which helps to transport nutrients
evaportation
liquid to gas
condensation
gas to liquid
precipitation
rain, snow, hail
transpiration
water leaving a plant
runoff
water on ground
percolation
water goes through soil layers
infiltration
water hitting the surface of soil
carbon sink
something that can store carbon out of the atmosphere
ex: forests, ocean, limestone, fossil fuels
What are the human affects of carbon cycle?
burning fossil fuels, clearing vegetation
ammonification
N2 goes to ammonia
Nitrification
ammonia to nitrite NO2 or nitrate NO3
Assimilation
nitrate/nitrite goes to plants
Nitrogen Fixation
process of taking nitrogen out of atmosphere into a non-atmospheric form
Denitrification
nitrate goes to N2
facultative bacteria
can survive with or without oxygen
anaerobic bacteria
can survive without oxygen
legumes
contain nitrogen fixing bacteria in their roots that provide nitrates for the plant to grow ex: peas
What human activities affect the nitrogen Cycle?
nitrogous oxide in the atmosphere (greenhouse gas), contaminating groundwater from inorganic fertilizers, the more humans=more food=more fertilizer
dead zone
when their is not enough oxygen and too much nitrogen and phosphorous in the water that evry living organism dies
phosphorous cycle
very slow, causes prolific plant growth, phosphate is mined out of rock and added to fertilizers and detergents
guano
bat poop that contains a lot of phosphorus
Human activities that affect phosphorus cycle
too much fertilizers going into runoff, excess phosphorus to aquatic systems form runoff of animal wastes and fertilizers
sulfuric acid
sulfur + H2O = acid rain which goes to plants then, animals eat plants, animal dies, decompose, and go into the soil
Human affects on sulfur cycle
burning coal adds sulfur dioxide to atmosphere, refining sulfur containing petroleum, acid rain
