Natural selection doesn't favor traits that are somehow inherently superior. Instead, it favors traits that are beneficial (that is, help an organism survive and reproduce more effectively than its peers) in a specific environment. Traits that are helpful in one environment might actually be harmful in another.
(one again, I hope this helps ^^)
Answer:
Gravitational time dilation occurs because objects with a lot of mass create a strong gravitational field. The gravitational field is really a curving of space and time. The stronger the gravity, the more spacetime curves, and the slower time itself proceeds.
The new cells have the exact same genetic information as the fertilized egg
Mitosis is a type of cell division which results in two daughter cells which have the same number and kind of cells as the parent nucleus. Mitosis is used to replace worn out cells and for growth. In plants, a new cell was is built between the daughter cells, while in animals the cell membranes constrict and pinch the parent cell into daughter cells.
