Environmental

Indiana is known for high radon levels in certain geological areas. Radon enters homes primarily through:

ARoof ventilation systems
BCracks in foundations, floors, walls, and through well water✓ Correct
CHVAC ductwork from outside air
DWindows and doors in below-grade rooms

Explanation

Radon, a naturally occurring radioactive gas that forms from uranium decay in soil and rock, enters homes through cracks and openings in foundations, floors, walls, and occasionally through well water. Indiana has many areas with elevated radon potential.

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