Geologic Timeline Individual Reflection

The three major events in Earth's history are Cretaceous, Jurassic, and Triassic. One of these three major events is Cretaceous. The cretaceous period is significant because it was the last and longest segment of the Mesozoic Era, also known as the "age of dinosaurs". The cretaceous period lasted for 79 million years. The second of these 3 major events is the Jurassic Period. The Jurassic Period is known for large plant- eating dinosaurs and smaller carnivores as well. We have discovered over 700 species of dinosaurs. The last of these 3 major events is the Triassic Period. The Triassic period followed the largest extinction event in the history of life and so was a time when the survivors of that event spread and recolonized the planet. The scale of Earth's history is categorized by era and major events. I was very surprised to learn how many millions of years have gone past. I feel sad because there has been so much destruction of species in a short period of time. I hope in the future we can find alternative ways of doing things so that the planet can try to recover. I really want to know more about the dinosaurs and how they came to live in the Mesozoic Era.