For the air force physical fitness test, men must be able to run 1.5 miles in less than

relationship between pressure and air volume and led to the understanding of how respiration works; i believe this is the correct answer ; /// good luck

i would suggest the best recommendation want to get out of the vehicle and look around to make sure their isn't anyone near or behind the vehicle.

explanation:

b) the heart is a pump made of muscle and that is difficult to grow in the lab.