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Earth’s systems interact through _______. a. humans b. glacial episodes c. feedback mechanisms d. none of the above

Victoria Fowler

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Craig Stewart on June 22, 2018

Answer: c. Comments mechanismsA feedback occurs when the output of a system is routed back as input, forming a loop or circuit of cause-and-effect. The Earth systems interact in this way.The concept of feedback loops is particularly important to understand the process of climate change. Feedback processes often amplify or diminish the effect of each climate forcing, and help us to determine the climate sensitivity (equilibrium temperature change in response to changes of the radiative forcing). Positive feedback amplifies the change while negative feedback reduces it.


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