This document discusses different types of pollution including air, noise, radioactive, and thermal pollution. It provides information on the causes, sources, effects and possible solutions for each type of pollution. For air pollution, key causes mentioned include burning fossil fuels, vehicles, industries, and agriculture. The health hazards of air pollution are more severe for individuals with heart or lung diseases, pregnant women, children and the elderly. Noise pollution sources discussed are transportation, industrial activities, construction sites, and public events. Radioactive pollution can result from nuclear accidents or waste, while thermal pollution degrades water quality by changing its temperature from industrial discharges.