Answer:
The circulatory system is divided into systemic circulation and pulmonary circulation.
Explanation:
Systemic circulation carries oxygenated blood from the left ventricle to the rest of the body while pulmonary circulation carries deoxygenated blood away from the right ventricle.
A standard unit of measurement based on the distance to the sun is the astronomical unit.
This is most likely a person who is driven. This type of person is very passionate on what he does and very competitive. Usually driven people has this need inside them to win and get a reward. They seldom do something just for fun, they do it because there is something they can get out of it besides from having fun.