The tilt of Earth's axis to the plane of its orbit around the Sun

A) stays the same.
B) varies about 2.5 degrees.
C) is currently about 3 degrees.
D) goes through one cycle of change about every 1.1 million years.
E) has a major effect on Earth's eccentricity.


B

Environmental & Atmospheric Sciences

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Earth experiences ice ages partly because there are variations in Earth's

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