Noise pollution refers to unwanted and disruptive sound that adversely affects human or animal life. Sources of noise pollution include industrial activities, transportation vehicles, household appliances, public address systems, agricultural machinery, and defense equipment. Noise pollution can cause death and disease in humans and animals by triggering stress responses and increasing blood pressure. It also negatively impacts wildlife behaviors and reduces biodiversity. Prevention methods include turning off appliances when not in use, using noise insulating barriers, wearing earplugs in loud areas, lowering volume levels, and regularly monitoring environmental noise levels.