Firs,day and night happens due to moon, earth's rotation and the moon. Secondly, there is a line on the between of the globe and if there is night on one part of the earth there is day on the other side of the earth. Hope I helped
Day and night are caused by the Earth's rotation on its axis, which takes about 24 hours. When one side of the Earth faces the Sun, it experiences daylight, while the opposite side is in darkness, resulting in night. Thus, as the Earth rotates, different regions alternate between day and night.
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