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AP® Environmental Science

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Radon

APES-JKNTUI

Which of the following BEST describes radon?

A

A colorless, odorless gas that can attach to dust particles and can cause certain cancers.

B

It was commonly used as insulation in the 19th century. It has since been outlawed as it is linked to lung cancer.

C

It is a colorless, odorless gas which binds to particles in the blood and can be fatal.

D

It is a dense metallic element that can cause developmental delays in humans.

E

It is a colorless, odorless gas which is an organic compound by plants to make sugars.