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Which statement best describes a human influence on the biogeochemical cycles?
A. increased eutrophication caused by high levels of nitrogen and phosphorous
B. increased nitrates available due to inaccurate methods of denitrification
C. increased global warming due to alternative energy sources
D. increased amount of water that is available to freshwater ecosystems

Respuesta :

WorldlyGlass49
The statement that best describes a human influence on the biogeochemical cycles is A) increased eutrophication caused by high levels of nitrogen and phosphorous. 
smilodon

The correct answer is A.

An increase in levels of nitrogen and phosphorus can cause eutrophication, which often leads to algal and phytoplankton blooms in the ecosystems and the formation of dead zones or toxins in the water. The excess nitrogen and phosphorus enter the water from agriculture water runoff and sewage release .

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