1. Explain how DNA is damaged by exposure to radioactive materials. 2. Which cells are most vulnerable to ionizing radiation? 3. Why is radiation used to treat some forms of cancer? 4. What are some...

1. Explain how DNA is damaged by exposure to radioactive materials.

2. Which cells are most vulnerable to ionizing radiation?

3. Why is radiation used to treat some forms of cancer?

4. What are some of the most important cancer-related environmental risk factors?