Rise of animals on Earth delayed due to Low Oxygen levels

November 4, 2014 2:05 AM

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Rise of animals on Earth delayed due to Low Oxygen levels

A new research shows that the early days of the earth had such low levels of oxygen that the rise of animals got delayed. This oxygen level was only 0.1% of what it is today.

This fact was highlighted when the researchers assessed why exactly the animals began to prosper at the end of the Proterozoic period some 800 million years ago as compared to billion-year prior to that.

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