Radon-222 is a colorless,odorless gas that forms ____.
A) when primary pollutants interact with ozone
B) from contaminated groundwater seeping through fractures in rocks
C) from underground rock and mineral deposits of uranium,shale,and granite
D) from coal-burning power plants
E) when smokers don't open windows

Question

Quizplus · Accepted Answer

Radon-222 forms from the natural radioactive decay of uranium found in underground rock and mineral deposits, including uranium, shale, and granite.

Radon-222 Is a Colorless,odorless Gas That Forms ____