Answer: Usually age unless its level of fitness but that's kind of vague
Explanation:
So I would say age in moderation because if you have like a 20 year old and a 17 year old doing exercise I don't think there will be a big heat exertion illness getting them down but if your health teachers annoying and is talking about a 18 year old exercising with an 87 year old than its definitely level of fitness
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Answer:
Nerves.
Explanation:
The brain is becoming slower and so the nerves are affected causing some degeneration of the nerves.
Nerves. The brain and spinal cord are part of the CENTRAL nervous system, and the kidneys are part of the renal system.
Answer:
cough, fever, body aches
Explanation:
early symptoms are similar to flu symptoms. this contributes to its multiplication because most don't realize the symptoms are as serious as they are--considering they're so similiar to common illnesses.