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.
Swimming offers a non-impact way to burn a relatively high number of calories in a short amount of time. The number of calories you burn depends on a few factors, but you can get an idea of how many a typical session might burn. The calories that you burn during your swimming sessions will help you reach and maintain a healthy body weight, which in turn may reduce your health risks.