Final answer:
Negative feedback helps maintain homeostasis by reversing changes, while positive feedback intensifies changes and moves the system away from equilibrium.
Explanation:
Negative feedback is a reaction that reverses the direction of change, helping maintain homeostasis in the body by keeping variables close to set values. In contrast, positive feedback intensifies changes and moves the system further away from equilibrium. Most biological systems rely on negative feedback to control processes and ensure stability.
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