2. 洪玲玲（ 12 ） 梁秋怡（ 25 ） 李梦婷（ 22 ）

4. Noise Pollution

5. With the development of machines, noise has also increased greatly in the 20th century. We live surrounded by loud planes, trucks and electric tools. Disco music reaches about 118 decibels. At decibels the ear stops hearing sound, and pain starts.

6. Outdoors 1.air plane 2.the car 3.Industry

7. Indoors 1.Disco 2.TV sets and radio 3.Loud speaking

8. Animals effects Noise can have a detrimental effect on animals by causing stress, increasing risk of mortality, and by interfering with their use of sounds in communication especially in relation to reproduction.

9. Human health effects Noise health effects Noise health effects are both health and behavioral in nature. Noise pollution can cause annoyance and aggression, hypertension, high stress levels, hearing loss health behavioral

10. Chang the spread of noise »Sound insulation set beside the roadway Pretect residents living the roadway

11. Building for sound insulation Pretect residents

12. Ways to avoid noies  Pretect people affected by noise  Entotic plug  Equipment for absorbing noise  Special materiels for absorbing noise 

13. It’s everyone’s responsibility to protect enviroment