why does the duration of day and night vary - Social Science - On the Trail of the Earliest People

Question

why does the duration of day and night vary ?

P. Sujatha · Accepted Answer

The duration of day and night differs through the year because of
the axis of the Earth The Earth is tilted at an angle of 23 4°
Owing to this reason, the daylight is higher in summers than that
in winters, and hence the difference in the duration of days and
nights