Carbon Di Oxide (CO2) pollution enters the atmosphere from three main sources- burning fossil fuel (coal and oil), cement manufacturing and gas burning. These figures show the total amounts produced by some of the leading industrial countries in the 200 years from 1800 to 2000.
CO2 is produced naturally by animals, forest fires and other sources. But natural production has been overtaken by the amount produced by transport, manufacturing and other human activities. More carbon dioxide in the atmosphere increases the amount of heat absorbed, and this leads to global warming. CO2 emissions by US countries in the year 1800-2000 are 301,279,000,000 tonnes of carbon. In Russian countries 86,705,000,000 tonnes of carbon are emitted in the same year gap of 1800-2000.
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