2 As global temperatures increase permafrost will begin to thaw (warm above 0 oC

Question

2 As global temperatures increase permafrost will begin to thaw (warm above 0 oC), reducing the amount of it on Earth. As permafrost thaws the organic matter contained within it will start to decay which releases methane into the atmosphere. Methane is a greenhouse gas so will absorb more outgoing infrared radiation. (4 points) Which of the figures below accurately represents the feedback process described above? (2 points) Temperature of planet Temperature of Absorption of Amount of permafrost otgoing infrared Amount of outgoing infrared radiation radiation Amount of methane in Amount of methane in Temperature of planet Amount of permafrost outgoing infrared Amount of outgoing infrared radiation Amount of methane in Amount of methane in O A

Explanation / Answer

ANSWER-

(a) C describes best the process described above.

(b) Its a positive feedback.

With respect to present increased levels of greenhouse gases in the Earth's atmosphere ,this is positive feedback.

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