Noise pollution is irrritating levels of noise. It is harmful. Cities r bieng corrupted by noise pollution. It cause s anoyance, stress, sometimes ear or brain damage also. Sources are ; loudly played music, horns of vehicles, heavy machinery, etc. Some ways to prevent it; fitting vehicles with silencers, insulating noisy rooms, using sound insulating matierials like carpets curtains in home. It can result in lack of concentration too. In some places it is banned to play music after 10pm. We should ourselves understand to not make noise in silent zones, such as hospitals.