Question

Which gas is a source of natural groundwater pollution

Answer 1

Radon is the answer

Step-by-step explanation:

Explanation: Groundwater pollution is caused when the pollutants are released to the ground which then enters the groundwater.

Natural groundwater pollutants are arsenic and radon.

Arsenic is present in the rocks and is in solid form.

Radon is a radioactive product formed by the decay of naturally occurring Uranium element in the Earth's crust. This is present in the gaseous form.

Hence, Radon gas is a source of natural groundwater pollution.

Answer 2

Radon is a gas at the temperatures we live in.
The gas is slightly radioactive, and it's soluble in water.
It's a widespread source of natural groundwater pollution,
and is responsible for the elevated level of radiation that's
often measured in the basements of homes.