If nitrates are important in the nitrogen cycle,why are they also contaminants of the water systems?
A)If ingested,nitrate is converted to nitrogen gas,which is toxic at low levels.
B)When ingested,nitrate is converted to nitrite and competes for oxygen in the blood,which is especially harmful to infants.
C)It indicates the presence of fecal contamination.
D)It is the major cause of eutrophication.
E)None of these pertain to nitrate.

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The Answer of If nitrates are important in the nitrogen cycle,why are they also contaminants of the water systems?
A)If ingested,nitrate is converted to nitrogen gas,which is toxic at low levels.
B)When ingested,nitrate is converted to nitrite and competes for oxygen in the blood,which is especially harmful to infants.
C)It indicates the presence of fecal contamination.
D)It is the major cause of eutrophication.
E)None of these pertain to nitrate.

If Nitrates Are Important in the Nitrogen Cycle,why Are They