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.

i'd say that the moon rock is about 2.2 billion years old.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.