day and night

We are on the go during the day time. I think we have night to give our bodies some time to rest.

we have day and night because earth rotates.. and it was made by God.. hheheheh

We have day and night because the Earth rotates. It spins on it's axis, which is an imaginary line passing through the North and South Poles. The Earth spins slowly all the time, but we don't feel any movement because it turns smoothly and at the same speed. The Earth takes a whole day (24 hours) to make a complete turn. At any time half of the Earth faces the sun. This part has day. The other half of the Earth faces away from the Sun. It receives no light. It is dark and has night. The sun is the source of light for day. Hope this help!

because the world we live in is round. it revolves as it rotates around the sun. that is why we have day and night