3 surprising sources of oil pollution in the ocean
from National Geographic
Of the tens of millions of gallons of oil that enter North American oceans each year due to human activities, only 8 percent comes from tanker or oil pipeline spills, according to the 2003 book Oil in the Sea III by the U.S. National Research Council of the National Academy of Sciences. Three little-reported sources of oil contribute to oil pollution in North American oceans.
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