Life on Earth may have begun billions of years ago with a quiet, single-celled whimper, but it really arrived with a bang about 540 million years ago. Within a relatively short period of time, life burst forth into an incredible diversity of forms, in an event that has since come to be known as the Cambrian explosion. Now, an international team of scientists has found clues to what may have caused that – spikes in oxygen levels.
.. Continue Reading Study links spikes in oxygen levels with bursts of evolutionCategory: Science
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