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4-What determines the length of a planet's day? *

A. tilt
B. orbit
C. moons
D. rotation

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User Vvill
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Answer:

Axis rotation to determine the length of a day

Step-by-step explanation:

The length of time it takes a planet to complete one full rotation on it's axis is what we would measure as being one day. On Earth, it takes slightly less than 24 hours to rotate on its axis and this is one day.

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User Damone
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