Answer:
to keep flowing of blood from left atrium to left ventricle
You may have heard that a young man named Abner Doubleday invented the game known as baseball in Cooperstown, New York, during the summer of 1839. Doubleday then went on to become a Civil War hero, while baseball became America's beloved national pastime. Is it helpful?
Answer:
A guessed of time a person or living object is supposed to live.
Explanation:
Progression, regularity, overload, varienty, variance, recovery, balance, specifity, reversability. hope it helped
