Which statement about stimulants and depressants is correct. a. stimulants speed up the way the brain works, and depressants slow it down. b. stimulants slow the activity of the brain, and depressants speed it up

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 might cause conflict because of how a person was raised?

Wjat are substances intentionally added to food to produce a desired effect?