1) what component of sunlight causes skin damage - explain how
2) free radicals damage skin cells - single oxygen atoms explain the use of vit A in the cream
3) draw a labeled section of skin
4 what is meant by the term peer reviewed?
5 Why is sue's statement incorrect
6 what is epidemiology?
7 describe why epidemiological studies are used for testing medicines
8 describe the different types of trails , blind double blind etc
9 why is wendy's view wrong