What is fav vegetable?

How do the uv rays cause damage?   what exactly causes the skin to burn;   can you be more specific about this mechanism?   3. how do photosensitive medications increase a person's sensitivity to sunlight and therefore increase their risk of getting burned?     what kind of medications can increase photo-sensitivity, can you think of some examples?

How can a driver best determine the safest speed to drive?

Checking blood sugar levels before, during, and after exercise is important for diabetics. select the best answer from the choices provided. t f