This document is a science report about air pollution written by K Prekshith of class 8B. It defines air pollution and discusses several types of air pollution like smog and acid rain. It describes the harmful effects of acid rain on agriculture, plants, animals, and infrastructure. The document also explains the greenhouse effect and discusses major causes of air pollution such as vehicle exhaust, power plants, industrial activities, and more. Finally, it provides some prevention methods for air pollution like using public transport, recycling, and reducing activities that cause forest fires.