This document discusses the various types of pollution that threaten the environment, including air, water, soil, noise, radioactive, thermal, visual, light, and personal pollution. Air pollution occurs when harmful gases and particulates are introduced into the atmosphere. Water pollution is when pollutants contaminate water bodies. Soil pollution makes the natural soil toxic through chemicals. Noise pollution propagates sound that harms humans and animals. Radioactive pollution contaminates surfaces with unintended radioactive substances. Thermal pollution degrades water quality by changing its temperature. Visual and light pollution impair views and the night environment. Personal pollution pollutes people's bodies and lifestyles through harmful actions like smoking.