Clean Air Act

Recycling is a process designed to collect, process, remanufacture, and reuse materials instead of throwing them away. Commonly recycled wastes… See more » Sewage is water that contains waste matter produced by human beings. It is also called wastewater. It contains about a tenth of 1 percent solid… See more » Bioremediation is a treatment method that uses microscopic organisms to break down hazardous wastes into harmless natural products, such as carbon… See more »