This document discusses the different types of pollution including soil, air, water, and noise pollution. It defines pollution as destroying the purity of things and notes it is a major problem threatening living things. The main causes of pollution are identified as wild science and technology, as well as the establishment of cities. The effects of pollution include poisonous drinking water, disrupted ecosystems, deforestation, and disease. Reducing pollution requires recycling materials that cause it, responsible chemical disposal, and access to clean technologies.