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Can promote the development of clouds through increased evaporation. the reflect

ID: 111709 • Letter: C

Question

Can promote the development of clouds through increased evaporation. the reflective surfaces of white clouds in the atmosphere can minimize the amount of sunlight reaching Earth. Increased cloud formation can also lead to increased rainfall and more vegetation. Plants remove carbon dioxide (one of the green houses gases that promote global ) photosynthesis. Hence, increase in vegetation can reduce carbon dioxide. The net effect is a decrease, in temperature to counteract the warming-a negative feedback. Consider the possible scenarios and determine which of them are true for positive feedbacks or negative feedbacks.

Explanation / Answer

1.increased plant photosynthesis resulting from a temperature rise can remove carbon dioxide from the atmosphere which can potentially lead to a positive feed back since we get more oxygen

2. increased evaporation resulting from temperature rise can produce more clouds which can potentially be a positive feed back as it results in rains

3.if ice cover melts due to temperature rise the result will be decreased albedo or reflectivity which can potentially be a negative feedback because it affects the amount of sunshine we receive