1. Problem - a question stating what the scientist is trying to find out.

What parts of the cardiovascular system are affected with atrial fibrillation?

How is health different for most people in this country today from what it was for people born in 1900? a. people have a shorter life span. b. people today work harder to survive. c. people today live in poorer sanitary conditions. d. people today can focus less on day-to-day survival and more quality of life.

Amedical coder billing for a hospital inpatient stay would use a/ancms-1500 claim form. b. ub-98 claim form. c. cms-1250 claim form. d. ub-04 claim form.