By substances, you mean those drugs taken by athletes. These drugs are performance enhancing drugs<span>, including anabolic steroids, stimulants, human growth hormone and diuretics. Anabolic stereoids help build muscle mass, Stimulants increase alertness and decrease appetite. Human Growth Hormone is taken to improve endurance and strength. Diuretics are banned because they tend to cover other drugs in urine test, and they cause rapid weight loss.
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The answer to your question is B because it stores urine from your kidneys .
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The six links include: the infectious agent, reservoir, portal of exit, mode of transmission, portal of entry, and susceptible host. The way to stop germs from spreading is by interrupting this chain at any link
Explanation: