I think it might be chemical
The spinning of Earth on its axis is Earth's rotation.
Hello!
The Moon is waxing in the period from the new moon to the full moon: every day, the luminous surface increases. THE WASTING MOON: The Moon is waning in the period from the full moon to the next new moon. Every day, the light surface decreases.
( hope it helps )
Then I guess it’s waxing
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