Respuesta :
Prior to the industrial revolution, the previous highest level of CO2 concentration in the atmosphere over the prior 400,000 years was 300 ppm.
Before the Industrial revolution, the carbon dioxide concentration in the atmosphere was lesser as there was not much carbon dioxide waste that was produced. The highest level of carbon dioxide recorded in the air was 300 ppm at that time.
After the industrial revolution, the concentration of carbon dioxide increased. We can see the carbon dioxide concentrations to reach as high as 1.5 trillion tons today. This is because the formation of industries has been increasing since then which produces a lot of waste carbon dioxide.
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