Multiple Choice
Around what date is the amount of solar energy per square metre that is incident upon the surface of the Earth in the northern hemisphere at its lowest level?
A) December 21, the winter solstice
B) March 21, the vernal equinox
C) June 21, the summer solstice
D) September 21, the autumnal equinox
Correct Answer:
Verified
Correct Answer:
Verified
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