Pollution is the introduction of contaminants into the natural environment that cause adverse effects. The document defines several types of pollution such as air, water, soil, noise, thermal, and nuclear pollution. It then discusses the causes of each type which include vehicle exhaust, industrial emissions, agricultural runoff, and other human activities. The consequences of pollution are outlined as negative health impacts, reduced biodiversity, climate change effects, and economic damages. Approaches to addressing pollution prevention are presented, along with relevant legal provisions and initiatives by environmental non-governmental organizations in India. The role of social workers in creating awareness and finding sustainable solutions is also covered.