Final answer:
Humans have emitted approximately half a trillion tons of CO2 into the atmosphere from burning fossil fuels, significantly contributing to the rise in atmospheric CO2 levels.
Step-by-step explanation:
Approximately how much CO2 has been emitted into the atmosphere from the burning of fossil fuels? The volume of CO2 emissions resulting from the combustion of fossil fuels is significant. Historical data and scientific analysis have shown that the human population's CO2 emissions are around 10,000 times greater now than at the onset of farming, and over 90% of this increase has happened in the last century.
Based on current trends and cumulative data, it is estimated that humans have emitted roughly half a trillion tons of carbon dioxide through the consumption of fossil fuels.
This estimation takes into account the sum of annual emissions and considers both the half of CO2 that remains in the atmosphere and the portion absorbed by the oceans and land. This immense volume of emissions has been a major factor in the increase of the atmospheric CO2 concentration, which is anticipated to reach double the pre-industrial levels by 2050 if current trends continue.