Hello everyone ! I'm a student in a secondary school. Nowday, our world is more and more polluted because of many reasons for example: Many people throw trashs on the puplic place; many factories dischange the dirty water to the river, lake, and dischange the toxic smoke to the air; ... All of this reasons make the soil polluted, the water polluted, the air polluted. So our health are getting worse, we will feel difficult to break on day. We must have some sollution to solve the problem and many enviroment clubs have established. And I hope all the people in the world will be award and solve this big problem or maybe the humans will exict on day very close.