a. The biggest one is that it can give you a headache, make it hard to concentrate and even damage your hearing. b. Noise pollution can cause many problems. c. Some studies have shown that people who don't get enough sleep are more likely to have accidents, become ill and do badly at school or work. d. If you live in a very noisy area, it can also affect the quality of sleep. e. For these reasons, it is necessary that noise pollution be minimised as soon as possible.