Microbial decomposition of organic materials in solid waste into useful soil additives and fertilizer; often, extra organic material in the form of sewer sludge, animal manure, leaves, and grass clippings are added to solid waste to speed the process and make the product more useful.
Swimming (leisurely pace) If you weigh 150 lbs, you can burn approximately 215 calories in 30 minutes. If you weigh 200 lbs, you can burn approximately 285 calories in 30 minutes. If you weigh 250 lbs, you can burn approximately 360 calories in 30 minutes.
Let's Burn 170 Calories! 1  37 mins. Swimming, treading water, moderate effort. 2  19 mins. Running, general. 3  19 mins. Bicycling, general. 4  47 mins. Walking, 2.5 mph, level, firm surface.