Once you have caught as cold or flu, you do not stay sick forever. how does your body eventually get rid of the viruses that cause a cold or flu virus?

One of the functions of the endocrine system in the body is to what

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 could a person communicate directly with leaders about community health issues