Final answer:
Negative feedback mechanisms aim to restore equilibrium by taking corrective action opposite to the change in the system. Positive feedback mechanisms, on the other hand, amplify the initial response to support a change in the system.
Step-by-step explanation:
A negative feedback mechanism works by a corrective action that is opposite to the change in the system. It aims to restore the equilibrium and counteract variations in conditions. On the other hand, a positive feedback mechanism supports a change that occurs in the value of a parameter, amplifying the initial response.