The graph below is the Keeling Curve, a record of carbon dioxide measured at Mauna Loa beginning in 1958. What can be learned from this graph? What do the two lines (black and grey) tell us?

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The Answer of The graph below is the Keeling Curve, a record of carbon dioxide measured at Mauna Loa beginning in 1958. What can be learned from this graph? What do the two lines (black and grey) tell us?

The Graph Below Is the Keeling Curve, a Record of Carbon