AP Environmental Scienceeasymcq1 pt
Radon is dangerous indoors because it
A.is a radioactive gas that causes lung cancer
B.explodes on contact with air
C.depletes indoor oxygen
D.causes acid rain indoors
Explanation
Core Concept
Radon seeps from uranium-bearing rock into basements, and its decay products irradiate lung tissue — the second-leading cause of lung cancer.
Correct Answer
Ais a radioactive gas that causes lung cancer
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