Biology, 14.10.2019 19:00 damientran
When you feel cold, there are sensors in your skin that tell the brain you need to warm up. the brain sends messages, by way of nerves, to the muscles in your body causing them to contract and relax very quickly resulting in a shiver. the movement of the muscles during a shiver generates heat which can be used to warm up the surrounding tissues. which characteristic(s) of life is being represented during this action?
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