13. Which of the following statements explains glacier retreat most accurately?
(A)A warmer climate raises the albedo of the ice, thus melting the ice.
(B)A warmer climate melts the ice, thus lowering the overall albedo, reinforcing the melting process.
(C)Global warming causes more precipitation, thus causing the glaciers to retreat.
(D)Global warming causes less precipitation, thus causing the glaciers to retreat.

Retreating glaciers