what are the principal sources of excessive
What are the principal sources of excessive nitrate and phosphate in rivers and lakes?
Excessive nitrates and phosphates come majorly from sewage effluents and intensive agriculture.
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q what is tricuspid valve annuloplastyit depends upon the cause of tricuspid regurgitation specific therapy is directed towards the particular cause
list three human activities which could cause the loss of a species human activities which threaten species with extinction are i hunting of
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a what is the special property of a persistent insecticide b in what ways is persistence i a useful property ii a harmful property a a persistent
what are the principal sources of excessive nitrate and phosphate in rivers and lakes excessive nitrates and phosphates come majorly from sewage
list the short-term and long-term effects of forest destruction a on hillsides b in the tropics a deforestation on hillsides exposes the soil
in what ways does over-grazing lead to soil erosionover-grazing leads to erosion because i the animals delete all the vegetation so exposing the soil
a gross profit 500000 and expenses 100000 for year 2b year 2 gpm 500k 1000k 500year 1 gpm 400k 850k 4705year 2 npm 400k 1000k 400year 1
a what are the two main pollutants that contribute to acid rain b where do these pollutants come from c what direct or indirect effect is acid rain
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