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staedtler staedtler
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7 years ago
The phenomenon of precession of the Earth's spin axis is caused by
A)   the variation of the spin rate of the Earth.
B)   the tidal ebb and flow of ocean waters on the Earth.
C)   the varying intensity, and hence pressure, of sunlight on the Earth throughout the year.
D)   the gravitational pull of Moon and Sun on the Earth's equatorial bulge.
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Discovering the Universe

Discovering the Universe


Edition: 7th
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hyponoticahyponotica
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7 years ago
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staedtler Author
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7 years ago
On behalf of my study group and I, thank you
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