Noise Pollution
The cartoon shows another kind of pollution for us. Besides the air pollution, noise pollution is becoming a more more serious problem, whether in cities or countryside.
With the development of machines, noise has also increased greatly in the 21th century.We live surrounded by loud planes, trucks electric tools.TV sets radios add up to 90 or 100 decibels, a certain unit used to measure the loudness of sound.A normal dialogue reaches 55 decibels; a plane goes to 100, an ordinary train, reaching the station,can be twice as loud as the loudest plane.Disco music reaches about 118.At high decibels the ear stops hearing sound, pain starts.How terrible if things go on like this!
It seems impossible to avoid all noises.But we can take measures to reduce noise.For example, many cities forbid cars pushing horn in the evening or in city centre. Planting more trees is another way to relieve the pollution since trees help absorb sound.I hope the government will take more more powerful steps to reduce noise, so that people can live a peaceful life !
