Noise pollution is a type of environmental pollution caused by loud and unwanted sounds. It can be caused by industrial activities, transportation, and other sources. AIR pollution is the contamination of the AIR by harmful gases, dust, and smoke. It is caused by burning of fossil fuels, industrial activities, and other sources. SMOG is a type of AIR pollution that is caused by the combination of smoke and fog. It is usually caused by the burning of fossil fuels and industrial activities. All three types of pollution, NOISE, AIR, and SMOG, are detrimental to the environment and human health.