Answer:
Evolution, natural selection and adaptation of species.
Step-by-step explanation:
- The Big Five extinction that took place was at the extinction at the Ordovician, the Late Devonian, the Permian, and the end of the Triassic, and End-Cretaceous.
- And scientists are still trying to found the causes of the events as they have impacted the diversity and life on earth to a much greater extent that the changes in the life cycles of the multicultural organism and the subsequent evolution of larger and much complex organisms.