Contractions in labor are an example of which feedback mechanism? negative feedback loop
stimulus/response loop
homeostasis imbalance
positive feedback loop

poditive feedback loop

Explanation:

A positive feedback loop results in a change in the body's status, rather than a return to homeostasis.

Oxytocin stimulates the muscle contractions that push the baby through the birth canal. The release of oxytocin result in stronger or augmented contractions during labor.

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".