ANIMAL EXTINCTION Many animals have disappeared during the long history of the earth. The most famous of these animals are dinosaurs. They lived on the earth tens of millions of years ago. long before humans came into being" and their future seemed secure at that time. There were many differ...
Roughly 70 percent of life on Earth was extinguished within the following hours, days, weeks, and months. Most notably, the impact and its aftermath spurred the extinction of the dinosaurs, thus altering the course of life as we know it. “It’s so rare in geology that we get to look...
Ⅲ.背景知识阅读Scientists count five known animal extinction waves in the Earth's history,including the extinction of the dinosaurs, and many now believe we have entered a sixth wave. This time, however, humans are the primary cause, through habitat reduction and destruction, over-hunting, pollut...
Extinction can be understood in terms of an everlasting termination of shape, form, and function; however, until now life has gone on. Where would we humans be if the dinosaurs had not become extinct? And we still manage to communicate, only not in proto-Indo-European, but in a myriad ...
fingers on its hands, and a long neck.Two types of Coelophysis fossils have been found, 'robust' and 'gracile.' These two forms probably represent males and females.Coelophysis lived during the late Triassic period, roughly 210 million years ago; it was one of the earliest-known dinosaurs. ...
With the extinction of the dinosaurs, they finally had their opportunity to step out and live in the available niches. (1) What is the main idea of the passage? A.Mammals caused the extinction of dinosaurs by eating their eggs. B.Some species of animals have been replaced by others due...
Looking back at the history of the Earth, thousands of animals died out as the environment changed. For example, some scientists believe that dinosaurs(恐龙) died out because a large meteorite(陨石) fell on Earth from outer space. This changed the weather conditions of our planet.In recent ti...
The history of the Earth is inseparably connected with the extinction of animal and plant species. We had no influence on many of them as human beings, because just like dinosaurs, they were extinct before humans appeared on the Blue Planet. However, many animal species have disappeared from...
Over the past 500 million years, there have been five times when life on Earth has almost ended, including the third mass extinction and the fifth event which caused the death of the dinosaurs. The reasons for extinctions are various. According to scientists, they include volcanic eruptions, ...
Looking back at the history of the Earth,thousands of animals have died out.Many animals disappear when their environment changes.For example,some scientists believe that dinosaurs died out because a large meteorite (陨石) fell on Earth from outer space.This changed the weather conditions of our ...