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Between the geological period 445 to 485 million years before present there was a surge in biodiversity on the planet Earth. This event is recognised as:
Great Ordovician Bio Diversification Event
Great Silurian Bio Diversification Event
Great Cambrian Bio Diversification Event
Great Devonian Bio Diversification Event
A recent study published revealed that the surge in oxygen levels between 445-485 million years ago led to three-fold increase in biodiversity of the world. This explosion in biodiversity is referred to as ‘Great Ordovician Bio Diversification Event. Hence, answer is a.
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