how did dinosaurs become extinct II পৃথিবীর ইতিহাস বিগ ব্যাং থেকে বর্তমান বিস্তারিত II mass extinction II Full Video II Earth History is one of the most interesting subjects to know. Because Still, people don’t know the actual history of the earth. The mass extinction occurred in the last few million years ago due to the asteroid impact or large volcanic events. The dinosaurs went extinct but how do people have curiosity. The history of the earth in Bangla is my new initiative. Here you can know from the big bang to the recent 6th mass extinction. Permian mass extinction.