7 years ago
Mystery of how first animals appeared on Earth 'solved by scientists'
New research has shed fresh light on how animals first appeared on the Earth. It is a story spanning hundreds of millions of years, of entire mountain ranges ground to dust by vast glaciers that once covered the planet and of dramatic climate change that ushered in a new biological age. Life on Earth was dominated by simple bacteria up until about 650 million years ago when more complex forms of life suddenly took over.
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http://www.independent.co.uk
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