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RESOURCE	GRADE LEVEL	MEDIA TYPE
CO₂ Concentrations at Mauna Loa Observatory, Hawaiʻi This resource, adapted from the Carbon Dioxide Information Analysis Center, provides a graph of monthly average carbon dioxide (CO₂) concentration from 1958 to 2000 at the Mauna Loa Observatory in Hawaiʻi.	6-12	Document

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CO₂ Concentrations at Mauna Loa Observatory, Hawaiʻi

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CO2 Concentrations at Mauna Loa Observatory, Hawaiʻi

CO₂ Concentrations at Mauna Loa Observatory, Hawaiʻi