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Passage context (self-reinforcing cycle): 'As the ice melts, the land and water under the ice become exposed, and since land and water are darker than snow, the surface absorbs even more heat, WHICH IS RELATED TO THE RISING TEMPERATURES.' Which choice best completes the description of a self-reinforcing cycle?
Aleads to additional melting.
BNO CHANGE (which is related to the rising temperatures)
Craises the surface temperature.
Dbegins to cool at a certain point.
Answer & Solution
Correct answer: A. leads to additional melting.
Choice D is correct. A self-reinforcing cycle requires the loop to feed back: more heat absorbed -> more melting -> more dark surface -> more heat absorbed. 'Leads to additional melting' closes the loop. The other options either restate (B), break the cycle (C), or vaguely gesture at temperatures (A).
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