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It absorbs sun’s heat． It is responsible for climate change． It reflects sunlight． It may account for a quarter of global warming over the past century．
sun’s heating on snow surface． soot’s increased absorption of solar energy． carbon-dioxide’s warming effect． snow’s increased reflection of sunlight．
covered covered in covered with covering
covered was covered are covered cover
excess stresses will not be set up in the boiler the decks will not be covered with soot the soot will be swept toward the uptakes there will not be a loss of steam pressure
Soot Snow Greenhouse gases Wind
covered covering to cover is covered
Ice sea areas． Areas with black carbon． Areas covered with white snow． Melting glaciers．
X sea ice and insufficient sunlight． light snow cover and sufficient sunlight． heavy snow cover and sufficient sunlight． thick sea ice and insufficient sunlight．
covered covered in covered with covering
full with, covered with fill with, covered in full of, covered in fill to, covered with
Second thirds; is covered Two thirds; is covered Two thirds; are covered Two third; covers
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