The answer is dermatologist. Dermatologists specialize in skin care and what not.
1, 2& 4th bullet I think is correct
I believe it is Amy's, because you said Amy's target heart rate zone is 140bpm -- 186bpm. Thus, Amy's is higher
Health insurance doesn’t mean that you must have the Cadillac of plans to cover every health need. Such plans are very expensive. There are other types of plans, such as HMOs, that provide less costly coverage.