________________ is a naturally occurring radioactive gas that may cause lung cancer.
A)Helium
B)Hydrogen sulfide
C)Radon
D)Carbon monoxide
E)Secondhand smoke

Question

Quizplus · Accepted Answer

Radon is a naturally occurring radioactive gas that is produced by the breakdown of uranium in soil, rock, and water. It can seep into buildings and accumulate to dangerous levels, especially in poorly ventilated spaces. Prolonged exposure to high levels of radon increases the risk of developing lung cancer.

________________ Is a Naturally Occurring Radioactive Gas That May Cause