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Which of the following is an accurate description of a positive feedback loop? SC.912.E.7.7

A.
It is uncommon in nature and it makes systems stable.

B.
It is common in nature and it doesn’t change the stability of systems

C.
It is uncommon in nature and is usually caused by humans

D.
It is common in nature and it makes systems stable

Sagot :

sandlee09

Regulatory functions such as feedback loops are very common in nature and happen thousands of times every day within our bodies alone.

A feedback loop is one of the methods by which biological organisms regulate functions. Feedback loops are a self-regulatory means through which the output of a system is then used as the input. Feedback loops can be of two types:

  • Positive Feedback
  • Negative Feedback

A positive feedback loop is one in which the system is stimulated to increase the production of a product. For example, the low levels of an enzyme in the blood will cause the body to produce more of that enzyme in a positive feedback loop. A negative feedback loop is just the opposite, in which high levels will cause a decrease in production.

Feedback loops are a vital part of maintaining homeostasis and for the survival of all organisms. Therefore, we can conclude that option D is correct in stating that feedback loops are common in nature and make the system stable.

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