Global warming
When burned, petroleum releases carbon dioxide; a greenhouse gas. Along with the burning of coal, petroleum combustion is the largest contributor to the increase in atmospheric CO2. Atmospheric CO2 has risen steadily since the industrial revolution to current levels of over 380ppmv, from the 180 – 300ppmv of the prior 800 thousand years, driving global warming.The unbridled use of petroleum could potentially cause a runaway greenhouse effect on Earth
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