Based on the above graph, the concentration of Carbon Dioxide in our atmosphere began to increase exponentially around 1860. Today, CO2 is at the highest concentration is has ever been. What do scientists attribute this exponential increase around the 1860s to? (1 point) Responses Glaciers melting and causing ocean acidification Glaciers melting and causing ocean acidification Increased agriculture and farm animal reproduction Increased agriculture and farm animal reproduction Combustion of fossil fuels by humans Combustion of fossil fuels by humans Deforestation by humans
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The scientists attribute the exponential increase in CO2 concentration around the 1860s to the combustion of fossil fuels by humans.
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