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Negative feedback is defined as a decrease in function in response to a stimulus. In negative feedback, an output of a particular system or reaction is decreased. Positive feedback is an increase in function in response to a stimulus. In positive feedback, an output is enhanced.

Which of the following is NOT an appropriate example of negative feedback?


The regulation of human body temperature in which the body shivers to bring up the temperature and sweats to cool down.


The control of hunger in which metabolism slows down to conserve energy and to allow the organism to survive with less food.


The formation of a blood clot where once a vessel is damaged, platelets stick to the injured site and release chemicals that attract more platelets until a clot is formed.


The production of red blood cells that results from a decrease in oxygen detected by the kidneys, which secretes a hormone that stimulates the production of red blood cells.

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