Ozone hole

Acid rain is a term for rain, snow, sleet, or other wet precipitation that is polluted by such acids as sulfuric acid and nitric acid. Acid rain… See more » Smoke consists of finely divided solid and liquid particles suspended (held) in a gas. Smoke is mostly made up of carbon particles produced by the… See more » Environmental pollution is a term that refers to all the ways that human activity harms the natural environment. Most people have witnessed… See more »