Environmental

Radon is a naturally occurring radioactive gas that is:

AVisible and has a distinctive odor, making it easy to detect

BColorless and odorless, produced by the decay of uranium in soil and rock✓ Correct

CFound primarily in urban areas with heavy industrial activity

DOnly a concern in commercial properties, not residential

Explanation

Radon is a colorless, odorless, tasteless radioactive gas produced naturally by the decay of uranium in soil, rock, and water. It can accumulate in buildings and is the second leading cause of lung cancer in the U.

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