The Jurassic Period took place about 210 million years ago. It went on for about 70 million years. The Jurassic Period was one of periods in the Mesozoic Era. The life forms that were present during the Jurassic Period were not all of the life forms in “Jurassic Park.” The Tyrannosaurus rex and Tricerastops had not evolved until after the Jurassic Period. During the Jurassic Period the largest land animals of all were around. These giant animals …showed first 75 words of 531 total…

…showed last 75 words of 531 total…to pump this oil out of the ground and make it useful by burning it. Burning the oil can create pollution. When we burn the oil it lets off gases that create smog. The smog then can trap in sunlight rays that are suppose to bounce of the Earth into outer space. It then can create the Greenhouse Effect. Which can melt the polar ice caps and cause another Ice Age. Bibliography www.jurassicperiod.com