3. Parkinson's disease is a condition that makes the neurotransmitter dopamine gradually disappear from one's brain region, the substantia nigra. true
false

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?

Can you tell the size of a woman's coxal bone by observation?

The nutrient facts label on a food package lists the following: iron 50%. what does this figure indicate?