Pollution refers to the presence of harmful substances or pollutants in the environment that can cause damage to living organisms and ecosystems. It can occur in various forms, including air pollution, water pollution, soil pollution, and noise pollution. Pollution is primarily caused by human activities such as industrialization, transportation, and improper waste disposal. It has detrimental effects on human health, wildlife, and the overall balance of ecosystems. Efforts to reduce pollution include implementing stricter regulations, promoting sustainable practices, and adopting cleaner technologies.