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

Increased agriculture and farm animal reproduction
Increased agriculture and farm animal reproduction

Combustion of fossil fuels by humans
Combustion of fossil fuels by humans

Glaciers melting and causing ocean acidification
Glaciers melting and causing ocean acidification

Deforestation by humans
Deforestation by humans

1 answer

The exponential increase in CO2 concentrations around the 1860s is primarily attributed to the combustion of fossil fuels by humans. This period coincides with the onset of the Industrial Revolution, which significantly increased the use of coal, oil, and natural gas for energy and industrial processes.