Which statement is an example of a feedback mechanism in humans 1.) increase in the level of blood sugar results in the pancreas increasing the amount of insulin it secretes

2.) increase exposure to pathogenic bacteria result in an increase in the number of red blood cells produced

3.) an increase in exercise results in a decrease in the rate of respiration

4.) increased muscle activity results in a decrease in heart rate

1.

Explanation:

Controlling the level of sugar in the blood is an example of a feedback mechanism

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