If when something that moves in elliptical orbits rotates, it causes cycles of day and night on it, then when what rotates are cycles of day and night created?

Answer choices:
- helps a species to thrive
 - Something that take eight minutes to travel to the Earth
 - several different ways
 - Changing the angle of the sun
 - chemical compound NaCl
 - just about everywhere on Earth
 - keeping food fresh for long periods of time
 - Something that moves in an elliptical orbit

 

        Something that moves in an elliptical orbit  