问题描述：
请以“saving the earth”为题,就一下内容：
1.如何保护环境已成为世界第一大难题.
2.垃圾污染环境,损害健康,不要到处乱扔垃圾.
3.废水流到农田里,污染农作物,流到江河,污染水源.
4.保持环境干净和整洁,我们只有一个地球.
不要太长,80词.
问题解答：
我来补答
Saving the Earth
Nowadays,environmental protection is becoming more and more important.Everyone should protect the environment in his or her daily life.I think it’s our duty to do something for the environmental protection.
First,we should save energy.We should always turn off the lights and computers when we leave the room.We can save a lot of energy in this way.Since water is important to us,we should save as much water as possible.For example,take short showers,use less water for washing clothes or dishes.Second,we must stop pollution.The air is becoming dirtier and dirtier,so we should ride to school instead of taking cars.I think the government should stop some factories from polluting the environment.
If everyone does his best to protect the environment,I am sure we can save the Earth- our home.
