How do the tides slow the rotation of Earth?
A. Tidal bulges move mass away from the center of Earth, slowing its rotation like a figure skater.
B. The tip in the Moon's orbital plane makes moving the tidal bulges away from the equator more difficult.
C. Alternating high and low tides create a wobble in Earth's rotation.
D. Tidal bulges generate drag forces between Earth and its water, slowing its rotation.
Answer: D
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