1、It's everyone's duty to love and protect the environment.
2、But some people don't care about it.
3、The most important question in the world today is pollution.
4、The amount of water which is suitable to drink is less and less.
5、Even worse, they pour dirty water in to rivers.
6、They waste a lot of water in their daily life.
7、Something must be done to stop the pollution.
8、They throw rubbish into rivers , too.
9、Do not throw rubbish onto the ground. Do not waste water. Use both sides of paper when you write. Stop using plastic bags for shopping. Make classrooms less noisy.
10、Planting trees Trees are very helpful and important for us.