Answer:
B) Valves closing
Explanation:
A healthy heart makes a lub-dub sound with each beat. This sound comes from the valves shutting on the blood inside the heart. The first sound (the lub) happens when the mitral and tricuspid valves close.
Not the way it looks here.
But if there's a plus or a minus sign, or even a fraction bar, in that space before the '5', then it sure is.
Answer:
B. drives
Explanation:
A student is trying to reach a goal, that goal is to get good grades. If I wanted to get a phone for working hard in school, it would then be an incentive.
Adult patient easy to practice medical research studying above age 29 40
