Which gas is a source of natural groundwater pollution ? A. Hydrogen B. Radon C. Carbon D. Oxygen

asked Mar 25, 2017 31.8k views

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4 votes

B. Radon is the answer....i just took the test

Sajjan Singh answered Mar 27, 2017

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B. Radon

Due to a stock of befalling uranium at the earth's shell, radon gas is formed causing natural pollution in the groundwater.

Per Arneng answered Mar 29, 2017

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