Ad: Higher Order Evolution Begins Adequate Amt Oxygen Fabric
Ever wondered how much oxygen in the atmosphere existed during the Cambrian explosion or around the Permian-Triassic extinction event? Wonder no longer and showcase your evolutionary sense of humor the next time you create with this fabric featuring the relative oxygen content of Earth's atmosphere during the course of the last billion years. Caption says it all: "Higher Order Evolution Begins With An Adequate Amount Of Oxygen". Classic atmospheric science geek attitude fabric! myEarthScience
#evolution #higher #order #oxygen #Fabric
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