The astronomical event that is now thought to have occurred some 65 million years ago, resulting in the death of a large fraction of all living species and leaving a layer of clay containing an enhanced concentration of a rare metal, iridium, in the geological record in rocks throughout Earth was a(n):
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The poles appear to be slightly flattened in a robinson projection. question 1 options: true false
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The astronomical event that is now thought to have occurred some 65 million years ago, resulting in...
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