It would help you know how they all work together like how the musicular system helps the digestive system during digestion
Vestigial traits are adaptations to environmental pressures which are no longer present.
homologous structures are similar structures found in different species that were present in a common ancestor.
analogous traits are similar traits found in different species that were developed independently (this process is known as convergent evolution)
I think its D. Mitosis is the division of a parent cell, producing 2 identical daughter cells whereas meiosis is the division of 2 germ cells, producing 4 non-identical gametes.
