Question

15/39
which of the following is an example of positive feedback?
thermoregulation
blood sugar levels
childbirth
blood pressure

Explanation:

To determine the example of positive feedback, we analyze each option:

• Thermoregulation, Blood Sugar Levels, and Blood Pressure are examples of negative feedback (they work to maintain homeostasis by reversing changes).
• Childbirth involves positive feedback: uterine contractions stimulate the release of oxytocin, which further increases contractions until the baby is born (amplifying the process).

Answer:

C. Childbirth