An example of how mass affects the motion of an object is

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 does a bone marrow transplant treat sickle cell disease?

Why would a person’s self-esteem affect his or her health?