Which chemical substance used in fertilizers can contaminate groundwater when carried to bodies of water by runoff or seepage?
A
Nitrates
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B
Lead
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C
Carbon dioxide
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D
DDT
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Solution
The correct option is A Nitrates Nitrate and nitrite are present in chemical fertilizers, human sewage and animal waste and fertilizers. They can contaminate a private well through ground water movement and surface water see page and water run off. Nitrate/ Nitrite in drinking water can cause methemoglobine or 'blue baby syndrome'.