We have to know that the most important point in which humans affect in Carbon Cycle, apart from breathing, is the combustion of any fossil fuels: oil, coal, natural gas…

During this process, combustion, carbon dioxide (CO2) and water (H2O) are released into the atmosphere.

This can be the bigger problem in greenhouse effect which would be the result of global warming.

It is only a possible expectation but, we have to know that each doubling of atmospheric CO2 should produce an increase of 1,5 to 5ºC in the surface of the Earth.

This is a graphic showing us the increasing

of burning fossil fuels in the last 150 years.

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