What causes our world to have day and night

Answer: the rotation of earth on its axis and revolution

Step-by-step explanation:

The earth revolves round the sun and rotates round its own axis. The rotation of the earth causes day and night. The part of the earth which faces the sun experiences the day time whereas the part away from sun gets no sun light and hence the night ... The axis of earth's rotation is tilted at 23.5 degrees.

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