MAKE A MEME View Large Image Dinolrg.png This chart shows a major decrease in oxygen content in the atmosphere from 35 percent to the present day level of 21 percent This decrease occured about the same time that the dinosaurs disappeared--65 million years ago http //...
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Keywords: Dinolrg.png This chart shows a major decrease in oxygen content in the atmosphere from 35 percent to the present day level of 21 percent This decrease occured about the same time that the dinosaurs disappeared--65 million years ago http //minerals cr usgs gov/gips/na/dinolrg gif USGS/USGov Free for all use Climate Geochemical diagrams PD-USGov Original upload log wikitable - - 2007-02-09 12 16 40 614 × 442 50760 bytes Zimbres <nowiki> This chart shows a major decrease in oxygen content in the atmosphere from 35 percent to the present day level of 21 percent This decrease occured about the same time that the dinosaurs disappeared--65 million years ago Sourc</nowiki>
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