A positive feedback loop is illustrated by all of the following except
A)melting polar ice
B)exponential population growth
C)a thermostat maintaining a certain temperature in your house
D)the greenhouse effect
E)none of these

Question

Quizplus · Accepted Answer

A positive feedback loop is a process in which the effects of a small disturbance on a system result in an increase in the magnitude of the disturbance. Option A, B, and D all involve processes that result in an increase in the initial disturbance. However, a thermostat maintaining a certain temperature in a house is an example of negative feedback loop as it involves processes that result in a opposite/dampening effect to an initial disturbance.

A Positive Feedback Loop Is Illustrated by All of the Following