If increased levels of carbon dioxide lead to further increases in temperature by promoting the release of even more carbon dioxide from the oceans, this means a ________ feedback has occurred and that the planet is ________.
A) positive; in equilibrium
B) positive; out of equilibrium
C) negative; in equilibrium
D) negative; out of equilibrium

Question

Quizplus · Accepted Answer

A positive feedback occurs when a change in one variable leads to further changes that amplify the original change. In this case, increased levels of carbon dioxide lead to higher temperatures, which in turn lead to further releases of carbon dioxide from the oceans, which leads to even higher temperatures. This positive feedback loop is causing the planet to be out of equilibrium, as temperatures and carbon dioxide levels continue to rise.

If Increased Levels of Carbon Dioxide Lead to Further Increases