Short answer, it can't.
Long answer, the "theory" is that the individual components of gasoline combine with components of the air when combusted to produce "greenhouse gas".
An American gallon of gasoline weighs about 6.4 pounds. Not counting water vapour, ach pound of gasoline produces about 2 to 3 pounds of greenhouse gases.
It equals exactly 12 pounds!
6,000 pounds.
A troy pound equates to 0.82286 standard pounds.
8 pounds 32 ounces = 10 pounds.
37 lbs. converted to inch pounds equals 444 inch pounds.
1.9375 pounds.
16oz equals a pound ... you do the math ...
1 ton equals 2000 pounds.
16 ounces equals a pound, 5 pounds would be 80 ounces.
1 "half-a-pound" = 1/2 pound = 0.5pound
lb, plural lbs, means pounds - from the Latin word for pound.