There are almost as many hypotheses about what killed the dinosaurs as there are researchers studying the topic. Anyone can make a hypothesis — come one, make one up right now — what do YOU think killed the dinosaurs? Now, knowing what you do about what science is, evaluate that hypothes...
[00:07.56]and caused the dinosaurs to die off. [00:12.24]Scientists mostly agree on where the impact happened [00:17.28]about 65 million years ago. [00:22.00]They say a huge object struck an area off the coast [00:...
Scientists have tried teaching robots common-sense rules. But even huge databases(数据库) don’t help much. Maybe they need more time to learn. 28.What may happen when a robot tries to pick up a pencil? A.It may break the pencil. B.It may roll the pencil. C.It may not find the...
The dinosaurs once lived happily on the Earth.But 65 million years ago,at the end of the CretaceousPeriod(白垩纪),they suddenly all died out.What happened to them?Scientists think that the change in temperature may tell us why.They have come up with lots of ideasto explain the end of ...
Megatrends: The Collapse of Global Democracy (theissue.io) Deep in the Wilderness, the World’s Largest Beaver Dam Endures – Yale E360 Landais Alzheimer – the village where everyone has dementia – BBC News Scientists study emotional reactions to 2023 being the hottest ye...
No scientists can exactly figure out what ___ happened ___ at that time, which caused the extinction of the dinosaurs. A. on earth; on the earth B. on the earth; on earth C. on earth; on earth D. on the earth; on the earth试题答案 在线课程 A 【解析】 试题分析:考查短语辨析...
I think the media liked a fun distraction that reminds us how the natural world still has its wonders and how scientists are still doing goofy stuff. I’ve long wanted to do a study of hippo locomotion, as part of my opus on how giant land animals move, so I recruited vet undergrad ...
A new discovery has given scientists a better idea of the sounds made by dinosaurs.The scientists examined a rare fossil.It was from an ankylosaur(甲龙),a kind of frightening dinosaur.The fossil is around 78 million years old.It includes the ankylosaur's voice box(喉).I...
aDinosaurs once lived on the earth , but they suddenly died out . What happened to them ? Some American scientists say it is because there were not enough male dinosaurs . They got this idea after studying crocodiles. 恐龙在地球上曾经居住,但他们突然灭绝了。 什么发生在他们? 一些美国科学家说...
Answer explanation:The answer is clearly mentioned in the said paragraph and line. In the passage, it is said that“however, at the next level of classification, within reptiles, significant differences in theskeletal anatomyoflizards and dinosaurs have led scientists to place these groups of anima...