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Q: Discuss how humans impact each cycle.
A: Please name the cycles
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User: Discuss how humans impact each cycle.





Weegy: Please name the cycles
Expert answered|shifa saleheen|Points 8862|

User: Carbon, Phosphorus, and Nitrogen Cycles

Weegy: Humans impact the carbon cycle during the combustion of any type of fossil fuel, which may include oil, coal, or natural gas. [ Fossil Fuels were formed very long ago from plant or animal remains that were buried, compressed, and transformed into oil, coal, or natural gas. The carbon is said to be "fixed" in place and is essentially locked out of the natural carbon cycle ( Humans intervene during by burning the fossil fuels. During combustion in the presence of air, carbon dioxide and water molecules are released into the atmosphere. Phosphorus enters the environment from rocks or deposits laid down on the earth many years ago. The phosphate rock is commercially available form is called apatite. Other deposits may be from fossilized bone or bird droppings called guano. Weathering and erosion of rocks gradually releases phosphorus as phosphate ions which are soluble in water. Land plants need phosphate as a fertilizer or nutrient. Humans affect the phosphorus cycle by moving phosphorus around and it becomes runoff. When it is in run-off, it can end up in large stores of water and the phosphorous can cause eutrophication to occur and this can kill animals and plants in the water... ]
Expert answered|shifa saleheen|Points 8862|



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Asked 1/22/2012 2:54:56 PM
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