Depends on how fast he runs in a sitting. If he runs slow during the 20 minutes he isn't getting much done :D.
There are different factors that may encourage substance abuse. Those factors can include stress of studies, trying to fit in because usually everyone at college parties do such kind of things, trying to get over something such as heartbreaks and even some substances help to become more hyper active and help with college errands.
However, there are also some reasons that might help a college student to stay away from such things. Those factors can include health reasons, parents pressure, college rules and even self-restrain
Just macroanatomy right?
I would say A, as the only answer.
Hope that helps,
The answer would be social environment. Claire of course lost the weight because of her hard work but the encouragement from her friends definitely helped motivate her.
There are two phases of the cardiac cycle. These phases are diastole and systole. The dicrotic notch is found during systole, specifically ventricular systole.
Systole is the time when <span>left and right ventricles contract and eject blood into the aorta and pulmonary artery.
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Diastole is the time when the ventricles are not contracting or are in a relax mode.
