Answer: b ttyy
Explanation I hope this helps
Closely related species often look similar but have courtship rituals that are slightly different to ensure that mating occurs between member of the same species. The correct option among all the options that are given in the question is the third option or option "c". This is to preserve the specialties that each species have.
Answer:
They can't because they are complete by themselves, i.e. independent of each other to survive, unlike higher animals and plants.
