Q: This knocks electrons from atoms and turns them into ions?


Read this paragraph and choose the correct option from the provided answers:

Long-term or high-dose exposure to radiation can harm both living and nonliving things. Radiation knocks electrons out of atoms and changes them to ions. It also breaks bonds in DNA and other compounds in living things. One source of radiation that is especially dangerous to people is radon. Radon is a radioactive gas that forms in rocks underground. It can seep into basements and get trapped inside buildings. Then it may build up and become harmful to people who breathe it. Long-term exposure to radon can cause lung cancer.

 Choices:

- convection

- chemical reactions

- evaporation

- radiation


A:
radiation