A deeper study into the virus itself
They produce pockets (eggs) for fertilization and they produce the reproductive hormones, oestrogen and progesterone.
Speciation is the process by which new species form. It occurs when groups in a species become reproductively isolated and diverge. In allopatric speciation, groups from an ancestral population evolve into separate species due to a period of geographical separation.
Correct answer - Frequency.
Why? - The frequency, is the number of waves that pass a certain point in a specified amount of time.