Early (Paleozoic): Pangaea was made and then broke apart, The first living things appeared on Earth, The oceans formed., The moon formed., Middle (Mesozoic): Dinosaurs roamed the earth, The first land plants appeared., mamals and birds evolved, Earth’s first “snowball Earth” time happened., Recent (Cenozoic ): The dinosaurs were wiped out., Human beings could be found on Earth.,

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恢復自動保存: ?