compare positive and negative feedback mechanisms.

Answer:

Positive feedback mechanisms amplify or reinforce the initial change, leading the system away from its equilibrium state. For example, during childbirth, the release of oxytocin causes uterine contractions, which in turn stimulate more oxytocin release, intensifying the contractions. Negative feedback mechanisms, on the other hand, counter - act the initial change to maintain a stable internal environment (homeostasis). For instance, when body temperature rises, the body sweats to cool down and return to its normal temperature range.

Brief Explanations:

Positive feedback enhances change; negative feedback restores balance. Examples from physiology are used for illustration.