Only some of the equator gets to experience day and night. When Uranus revolves around the Sun, one part gets light and day while the other gets night and darkness. So it changes because one time you can be looking and its day. Then you will look again and it will be night since Uranus moved around the Sun.
In artificial selection, nature provided the variation, and human selected those variations that they found useful
Answer:
Mitosis occurs in somatic cells is true