Environmental

Radon is a naturally occurring radioactive gas that enters homes primarily through:

AContaminated municipal water supplies
BCracks and openings in the foundation from soil beneath the building✓ Correct
COld lead paint on walls
DAsbestos insulation in attics

Explanation

Radon is a radioactive gas produced by the natural decay of uranium in soil and rock. It typically enters buildings through cracks and openings in foundations. Long-term radon exposure is the second leading cause of lung cancer in the U.S. Testing and mitigation systems are available.

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