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3 April, 00:15

What have many scientists inferred from the iridium found at the Cretaceous boundary?

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  1. D
    3 April, 01:25
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    Iridium is a very rare metal so high traces of this at the Cretaceous boundary leads many scientists to believe this as evidence of an extra-terrestrial impact evident. This is based on the observation that there is an abundance of this metal found in meteorites.
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