1、Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,Dinosaurs,the Extinction of Dinosaurs,Three Theories,Theory 1:,The worldwide temperature rise at the end of the Cretaceous,which caused the male dinosaurs testes to stop function.As
2、a result,sterilization stopped,leading to extinction of the dinosaurs.,Theory 2:,The second theory attributes the disappearance of dinosaurs to their ingesting psychoactive agents contained in flowing plants.,Theory 3:,An asteroid hit the earth,causing a cloud of dust to block out the sun.This halted photosynthesis,光合作用,and dropped the temperature,and multiple creatures died.,霸王龙,Ty,rranosaurus,雷龙,Brontosaurus,禽龙,Ig,uanodon,剑龙,Stegosaurus,钩龙,Ankylo,saurus,三角龙,Triceratops,
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