<span>B. False
That is a matter of opinion.
Some </span><span>Americans could be afraid of heights.
Other find it very enjoyable to Mountain climb.
But not all </span>Americans <span>enjoy the sport of mountain climbing. </span>
Answer:
Hope it helps!
Explanation:
The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic). The system is responsible for the flow of blood, nutrients, oxygen and other gases, and as well as hormones to and from cells.
Because they are responsible for controlling genetic details or information which is in our DNA .