Which of the following is correct about feedback systems? O Positive feedback systems resist change Positive feedback systems help restore original state O Positive feedback systems are always detrimental (harmful) to an organism O Negative feedback systems are less common than positive feedback systems The hormone oxytocin is involved in a O negative feedback loop during human labour (birth) A high estrogen level has a negative feedback effect on the hypothalamus, decreasing the secretion of gonadotropin releasing hormone (GnRH) Negative feedback systems reinforce the change None of the above are correct O O

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