What is an organism?Write its example

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?

Sweat glands that cause orders during puberty are present in the body from the time of brith

The type(s) of air pollution you will be discussing