This document defines and discusses five types of pollution: air, water, land, noise, and general pollution. For each type of pollution, it provides an introduction, causes, effects, and methods of prevention. The key types of pollution covered are air (caused by industries and vehicles, harming human health), water (caused by industrial and organic waste, causing diseases), land (caused by waste, construction, and industry, impacting agriculture and biodiversity), and noise (caused by traffic, aircraft, and industry, causing health issues). Prevention methods include reducing vehicle and industrial emissions, proper waste disposal, noise regulations, and sustainable land and resource use.