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Keeling's measurements at Mauna Loa (the Keeling curve) demonstrated:

A. an increase in tropospheric CO2 from the 1950s to the present
B. that CO2 levels have been stable over the last 40 years
C. that ice core data can yield clues about past climates
D. that as distances from cities decreased, CO2 concentrations increased
E. the presence of El Niño events originated from Hawaii

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Final answer:

The Keeling Curve illustrates the exponential rise in CO2 levels, with ice core data supporting the recent dramatic increase linked to human activities like burning fossil fuels, underscoring the connection between greenhouse gases and climate change.


Explanation:

The Keeling Curve:

  • Begun in 1958 by Dave Keeling, the Keeling Curve reflects an exponential increase in CO2 levels at Mauna Loa Observatory in Hawaii.
  • Ice core data confirms that CO2 concentrations have been relatively stable before industrialization, with a dramatic increase in the last 200 years due to human activities like burning fossil fuels.
  • These measurements reflect a strong correlation between rising CO2 levels and global temperature increase, showcasing the impact of greenhouse gases on climate change.

Learn more about CO2 concentration and the Keeling Curve here:

https://brainly.com/question/32746915


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