Direct fuel injection enhances the efficiency of burning fuel and contributes to lower fuel consumption and thereby also to lower CO2 emissions. (skoda-auto.com)
The human body stores energy from food for future use as saturated fat, which is a cleaner burning fuel source than glucose. (healthybabycode.com)
One type of sulfur oxide, sulfur dioxide, is produced by burning fuel that contains high levels of sulfur. (cheapcarinsurance.net)