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TOEFL
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Listening practice
/ Section 3P4K
Listen to an Academic Talk
Listen to part of a talk in an environmental science class.
Listen
46. Why does the speaker describe the effect of dark canopy over snow?
A
To argue that northern soils store little carbon
B
To show that snow cover is decreasing
C
To explain how forests survive northern winters
D
To give a case where planting can warm rather than cool