Mitosis is a part of the cell cycle when replicated chromonsomes are separated into two new nuclei.
Natural selection! In the theory of natural selection, those with less beneficial traits won't live to reproduce, but those with beneficial traits will be able to reproduce and pass on those traits to their offspring, which significantly increases the frequency of those beneficial traits.
Answer A. If the tectonic plates continually move then they change earth’s crust constantly.
The correct answer is that the yolk provides nutrients for the embryo. Hope this helps.
