Now the world's pollution problems are becoming more and more serious。 Such as water pollution， noise pollution， environmental pollution， light pollution and so on。 These pollution caused serious harm to people。 It makes people sick， and even death。 What causes these pollution？ The answer is human。 Is people who created these serious pollution。 People use a lot of chemicals that environmental pollution is serious。 Many factories discharge waste water into the river in the clear。 A lot of fish in the river， the river has not used。 I want people to have the awareness of environmental protection， not to destroy our environment。 We have only one earth。
