The five are costs, availability, safety, content, and byproducts of the fuels use. Hope I helped!
The feedback loops communicate with the body to ensure homeostasis.
Answer is A. Feedback Loops
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A zoonosis (zoonotic disease or zoonoses -plural) is an infectious disease that is transmitted between species from animals to humans (or from humans to animals).
By warming up your muscles (I am assuming you mean by stretching and doing jumping jacks and such, not sitting yourself in front of a heater...) you will have a better overall workout. Your muscles will be ready to work and you will not tire as fast. Also, your muscles will feel better the next day because you got them ready to work out.