I would go with mathmatical formula because of physics and what not but I'm not completely sure so if you have a different possible answer you think would be better, go with that :)
Answer:
The Paleozoic involved the appearance of fish, and eventually of life moving onto land. The Mesozoic was dominated by dinosaurs. The Cenozoic started with the extinction of the dinosaurs, and included the development of birds and mammals. ... The Mesozoic Era ended with another extinction.
Association between all the living things on earth
Animals that reproduce by laying eggs are called oviparous animals. In these animals, the process of both fertilization and embryo development does not occur inside the mother. Birds and frogs are examples of oviparous animals.
