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Question
The four seasonsspring, summer, fall, and winterare caused by the Sun's changing its daily altitude over a period of 1 year. The Sun's altitude changesA) simply because Earth revolves eastward about the Sun.
B) simply because Earth rotates on its axis.
C) simply because Earth's axis is tilted 23.5 from the normal to the ecliptic plane.
D) because of the combined effects of (A) and (C).
Answer
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Related questions
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______________ principle explains why objects float or sink in a fluid.
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