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In biology, feedback refers to a control mechanism where the output of a biological process influences its own continuation. This self-regulating process helps maintain stability, known as homeostasis, which is crucial for survival.

Feedback loops can be positive, amplifying a change, or negative, correcting or controlling it. In biological systems, negative feedback is common for maintaining a stable internal environment. For example, hormones like insulin and glucagon regulate blood sugar levels through feedback mechanisms. The endocrine and nervous systems work together to coordinate these responses, ensuring that biological systems adjust to conditions optimally for survival.123

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