Exam (elaborations)
GEOG 1900 Exam 1 with Complete Solutions
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GEOG 1900 Exam 1 with Complete Solutions early atmosphere very little free oxygen, lots of carbon dioxide, lots of water vapor Reasons for atmospheric change less volcanic activity, less atmospheric H2O and CO2, increase in O2, due to photosynthesis Permanent gasses nitrogen, oxygen, argon Wh...
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