Sound Pollution Paragraph

Loud noise problem happens when there is too much noisy sound. The UN says that normal sound should be under 45 decibels. When sounds are okay and nice, we call it sound. But when it hurts our ears, it's called noise. Noise can bother people's activities. Most outdoor noise comes from machines and vehicles like cars, planes, and trains. Bad city planning can make noise too. If factories and houses are close together, the houses might get noisy. Inside, noise can come from machines, construction, music, and some workplaces. Noise hurts health and how we act. Too much noise can make us feel bad. It can also make us not hear well, mess up our sleep, and even hurt our heart and blood pressure. Some countries try to stop loud noise with good city planning and telling people about it. In Holland, schools can't be near airports. Houses by airports get special stuff to keep noise out.