From Wikipedia, the free encyclopedia. A teenager, or teen, is a young person whose age falls within the range from 13â19. They are called teenagers because their age number ends with teen. Usage by ordinary people varies, and also varies in different societies.
Astronomers and other scientists often speak of the extinction of dinosaurs on this earth. They believe that dinosaurs disappeared from the earth some 65 million years ago, long before man came along.They make these statements as if it were a known, proven scientific fact that dinosaurs were long gone by the time men appeared on the earth.hey believe that dinosaurs disappeared from the earth some 65 million years ago, long before man came along. They make these statements as if it were a known, proven scientific fact that dinosaurs were long gone by the time men appeared on the earth.
As we all know, dinosaurs became extinct approximately 66 to 65 million years ago. This question is a good one. Most of the dinosaurs died due to the meteor, volcanoes and all the disasters due to it (tsunami, shockwave, pyroclastic flow, ash,global warming and cooling). The big dinosaurs like T.rex, sauropods etc., dropped dead first (see the disadvantage of being big).