“For over 100 million years when dinosaurs were the dominant predators, mammals were generally small, nocturnal, and short-lived.” The pressure to stay alive eliminated the genes needed for long life. Citing reptiles and other animals with a much slower biological aging process than mammals, ...
Dinosaurs(恐龙)lived a long time ago before humans were around. Fossiles( 化石)tell us what shape they were. Little is known about their daily lives. Looking at what they ate helps us to know more about them. Scientists have found teeth marks of one dinosaur on the bones of another dino...
相关知识点: 试题来源: 解析 解析:long before humans came into being在人类出现很早之前。come into being产生,出现,存在,形成;come into contact打交道,与……接触;come into force生效,开始实施;come into sight进入视野,看见。 答案:A反馈 收藏
why did dinosaurs evolve earlier than humans? Based on theory of evolution by natural selection, how will humans and other life forms evolve further? If humans came from monkeys, why can't we communicate with them? True or false? Humans evolved from chimpanze...
Read the full-text online article and more details about Believing in Art of the Impossible; What If Humans and Dinosaurs Lived Together and in Perfect Harmony? Artist James Gurney Tells David Whetstone about His Fantasy Land, Dinotopia.
During the Mesolithic period (about 10,000 B.C. to 8,000 B.C.), humans used small stone tools, now also polished and sometimes crafted with points and attached to antlers, bone or wood to serve as spears and arrows. They often lived nomadically in camps near rivers and other bodies ...
百度试题 结果1 题目【题目】Dinosaurs lived on the earth tens of million s of years ago, long after humans came int o being.___ 相关知识点: 试题来源: 解析 【解析】 after改为be fore 反馈 收藏
Humans have always been curious about what Earth was like thousands of years ago.To learn more about the plants and animals that lived during that time, scientists examine their fossils or other remains. In recent years,genetics,and in particular the study of DNA,has become an important tool ...
“Evolving during the rule of the dinosaurs left a lasting legacy in mammals,” de Magalhães wrote. “For over 100 million years when dinosaurs were the dominant predators, mammals were generally small, nocturnal, and short-lived.”
Did you know that the cavemen characters we see in cartoons and movies are based on early humans that lived thousands of years ago? Learn interesting facts about how Neanderthals lived and got the nickname 'cavemen' in this lesson. Related...