Environmental

In Tennessee, 'radon' is classified as a:

ABiohazard from mold
BNaturally occurring radioactive gas that can accumulate in buildings✓ Correct
CChemical contamination from industrial sources
DLead-based paint hazard

Explanation

Radon is a naturally occurring radioactive gas produced by the decay of uranium in soil and rock. It can accumulate in buildings and is the second leading cause of lung cancer in the US.

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