21.   More than half the electricity in the United States is produced by burning coal, which generates the most carbon dioxide per watt of any fuel.

22.   Ninety-five percent of the energy we deliver to our customers comes from burning coal.

23.   Others have been flooded by damming surface streams and creating lakes over the burning coal.

24.   Soldiers are dropped by helicopter, then take Humvees into remote places where they walk for hours searching for burning coals and hot spots.

25.   Some people choose religion, others choose the therapy of burning coals.

26.   Sulfur dioxide is a colorless gas produced from burning coal that reacts with chemicals in the atmosphere to cause a whitish haze.

27.   Sulfur dioxide, produced mainly by burning coal, is the primary cause of acid rain and acid snow, which threaten the health of Adirondack forests and lakes.

28.   That would get rid of the sludge and, because sludge burns more cleanly, would mean lower carbon dioxide emissions than burning coal alone.

29.   To avoid that hazard, y remove the grate from the grill, spray it away from the burning coals or gas and then return it to the grill.

30.   We would achieve energy independence and end the massive damage caused by burning coal, all in one stroke.

a. + coal >>共 331
hot 7.51%
burning 4.16%
australian 3.65%
russian 2.64%
coking 2.23%
ukrainian 1.62%
old 1.52%
clean 1.52%
local 1.32%
cheap 1.32%
burning + n. >>共 568
building 7.77%
tire 6.91%
house 4.22%
car 3.24%
sensation 2.88%
desire 2.57%
issue 2.29%
coal 1.62%
wood 1.46%
oil 1.38%
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