Environmentalhard · Past Paper
The 'Keeling Curve' is a graph that plots the:
AGlobal population growth
BConcentration of CO2 in the atmosphere
CMelting rate of Arctic ice
DOzone layer thickness
✓ Correct Answer: B — Concentration of CO2 in the atmosphere
The Keeling Curve shows the ongoing change in concentration of carbon dioxide in Earth's atmosphere since 1958.
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