In the Rocky Mountain region of the United States, north-facing slopes (downhill direction is toward the north) are typically moister and more heavily forested than south-facing slopes. Why?
A) South-facing slopes receive more moisture and sunlight; rock weathering is slower.
B) North-facing slopes receive more sunlight in the summer; snow melts faster and more soil moisture is available for the trees.
C) North-facing slopes receive about the same amount of precipitation as south-facing slopes; less moisture evaporates from north-facing slopes.
D) South-facing slopes receive less moisture, yet rock weathering is faster.
C
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