The document defines pollution as contamination that disturbs nature, giving examples of air, water, and noise pollution caused by human carelessness. It discusses how air pollution involves releasing chemicals and trash into the atmosphere from sources like factories, while water pollution means discharging industrial and commercial waste into surface waters, such as from oil spills and factory runoff. The document also recommends ways to prevent pollution, such as recycling waste into usable materials, composting organic waste, and treating water.