A or B?
I am trying to decide something and need help

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?

Adisease in which scar tissue replaces healthy liver tissue

Which of the following shows how other countries have influenced the creation of physical activities geared toward individuals baseball cricket swimming tai chi