HEy. <3 100 points oMg!

sO mUcH

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?

What is the name of the device that senses the current flowing,tripping the circut,and cutting off the electricity

The frequency in wich you perform certain exercise depends on the blank of the exercise