very hot and humid
Earth has existed a little more than 4.5 billion years. 160,000 million years ago was the Jurassic period. The climate was warm and humid, leading to lush and green foliage. It was an ecologically diverse time, and mammals were evolving rapidly. There were dinosaurs.
1.8 million years ago
4600 million years ago
570 million years ago was in the Neoproterozoic Era. This lasted from 1,000 to 542 million years ago.
The last dinosaurs became extinct about 65 million years ago at the end of the Cretaceous period.
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Earth has existed a little more than 4.5 billion years. 160,000 million years ago was the Jurassic period. The climate was warm and humid, leading to lush and green foliage. It was an ecologically diverse time, and mammals were evolving rapidly. There were dinosaurs.
due to climate changes :)
60 million years ago Canada was a mass of ice.
Thousands of year ago Antarctica was much like it is now: very cold and covered in ice. You would have to go back 160 million years to find it was warm.
Obviously - Climate change
16 million years ago approximately
1.8 million years ago
4600 million years ago
nuthinq . a star ?
The Ichthyosaurs, predatory sea reptiles, were rather like modern dolphins. They existed from the Early Triassic Period (250 million years ago) till the Middle Cretaceous Period (100 million years ago).
570 million years ago was in the Neoproterozoic Era. This lasted from 1,000 to 542 million years ago.