1- Why did dinosaurs evolved earlier than humans? 2-living beings were evolved millions of years after the formation of earth. Why? 3-On what basis scientists believe that humans beings and earth did not come into the existence at the same time? 4- How is the information about ancient living beings taken? Explain

1.Dinosaurs came much earlier than humans in the history of our planet. Dinosaurs were large animals. Mammals of the time were much smaller and couldn't compare to dinosaurs in size.

2. ok so, the evolution of the earth occurred 4500 millions of years ago. During that time its surface was so hot hot, not even a single species could survive and to cool the earth surface it took millions of year and atmosphere started to develop around it. So, living beings were evolved only millions of years after the evolution of earth.

3. According to the geological time scale prepared by the scientist, earth was evolved 4500 years ago ; during that time only rocks were present and human beings were evolved just before 2 mil. years ago. Which shows that human beings and earth did not come in existence at the same time.

4. Historians have two major ways of understanding the ancient world: archaeology and the study of source texts. Primary sources are those sources closest to the origin of the information or idea under study.

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