Question

variation in the length of days and night is due to ______​

Answer 1

Answer:

ROTATION

Explanation:

The change between day and night is caused by the rotation of the Earth on its axis.

Answer 2

$\huge\bf\blue {Hey\:Mate!!!}$

Variation in the length of days and night is due to Inclination of our Earth's axis and Revolution around the Sun.

@ItsMysteriousGirl✍