What Earth Was Like Just Before the Dinosaurs?: The Permian-Triassic extinction a quarter billion years ago marks the beginning of the age of dinosaurs. But it was tens of millions of year later that life could get back to normal because the super contin
ago,mygrandfatherwas 1 hisfavoriteexpression.Thefollowingday,asIcompletedmywork,I 2 abeeontheskylight(天窗).Thoughthe skylightwasparticularlyhigh,Ithought 3 the beewouldtakeonlyfiveminutes.Anhourlater, thebeestillremained.Whathadchangedwasthat theroom wasmessyandthatIwas 4 from lookingupintothesunlight...
Sixty-five million years ago, a massive asteroid crashed into the Earth. It wiped out 70 per cent of all life, including the most successful, the dinosaurs. But what if the asteroid had missed? What would the world be like today if the dinosaurs had surv
This can be used to find out what the climate was like before, during, and after dinosaurs became extinct. But unlike other scientists, paleontologists cannot go into a laboratory and repeat experiments. They can only untangle history by examining fossils. Unfortunately, there is not enough ...
What was the oldest dinosaur?Archosaurs:Archosaurs are a clade of reptiles (a group defined by a common ancestor) that includes the dinosaurs and by extension modern birds, as well as crocodiles. The flying pterosaurs are also Archosaurs, having evolved between crocodiles and dinosaurs. The ...
The dinosaurs suddenly died out. What happened to them? Scientists thought that a change in temperature may be the reason. They have come up with lots of ideas to explain the end of the dinosaurs. The most famous one is the minor planet (小行星) idea. Everything Was OK before a large...
某市的人大常委会制定了一部地方性法规，规定公民如果要 90第92页经营某种商品，不但要得到工商行政管理部门的许可，而且要得到文化和卫生行政管理部门的许可。但是，相应的行政法规并没有规定要得到文化和卫生行政管理工作部门的许可。则关于这部地方性法规的正确说法：（ ）
And speaking of dinosaurs, Neil, it’s time for you to reveal the answer to your question: what was the name of the famous dinosaur which greeted visitors to London’s Natural History Museum? 说到恐龙,尼尔,是时候揭晓问题的答案了:在伦敦自然历史博物馆迎接游客的著名恐龙叫什么名字? I said it...
When Could You Find Dinosaurs? When the dinosaurs lived, the Earth’s continents were jammed together into a supercontinent called Pangaea and the Earth was warmer than it is now. The dinosaurs dominated the Earth for over 165 million years during theMesozoic Era, but mysteriously went extinct ...
Animals are disappearing at hundreds of times the normal rate, primarily because of shrinking habitats. Their biggest threat: humans.