Compare and contrast bacteria and virus

Explain what causes the skin to burn in the sun? explain why people should avoid the sun if taking a photosensitive medication?

Agirl is working really hard in high school and decides to finish some of her classes early , what classes should she choose?

Which of the following statements concerning cancer and mutations is correct? a: cancer can only occur with a mutation in a somatic cell. b: usually, multiple mutations are required in different genes to cause cancer. c: none of the other answer options is correct. d: cancer can only occur with a mutation in a germ cell. e: usually, a single mutation is all that is required to cause cancer.