This document discusses different types of pollution including air, water, and noise pollution. It defines each type of pollution and discusses their causes, effects, and methods of prevention. Air pollution is caused by industries, automobiles, and gases and can irritate respiratory systems and cause health issues. Water pollution contaminates water sources, affecting both humans and aquatic life. Noise pollution originates from transportation, traffic, and loud events and can damage hearing and cause stress. Prevention methods include reducing pollution at the source, using shields and barriers, and limiting noise exposure.