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{"Image DocumentName": "Radiocarbon Dating Radioactive 14C is formed in the upper atmosphere by nuclear reactions initiated by neutrons in cosmic radiation:", "Image ImageDescription": "14N + 10n \uf0ae 14C + 1H. The 14C is oxidized to CO2, which circulates through the biosphere. When a plant dies, the 14C is not replenished. But the 14C continues to decay with t1/2 = 5730 years. Activity of a sample can be used to date the sample.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}