Quote:
Originally Posted by ELVIS
Explain how it renders the atmosphere harmful, please...
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Did you not read what I posted?
"Motor vehicles are responsible for almost a quarter of annual US emissions of carbon dioxide (CO2),
the primary global-warming gas."
and as Sesh followed up:
"2.
any substance, as certain chemicals or waste products, that renders the air, soil, water, or other natural resource harmful or unsuitable for a specific purpose."
Carbon dioxide and other air pollution that is collecting in the atmosphere like a thickening blanket, trapping the sun's heat and causing the planet to warm up. Coal-burning power plants are the largest U.S. source of carbon dioxide pollution -- they produce 2.5 billion tons every year. Automobiles, the second largest source, create nearly 1.5 billion tons of CO2 annually.
Can't make it any simpler than that.