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Although the world develops much faster and better, the resources on the earth get fewer and fewer.In order to protect them,something must be done. Save water. Water is the source of life. No water, no life. So it s very important for us to do so.Not only should we protect drinking water and stop polluting it, but also make full use of it. Save electricity. It is crucial. We can t imagine what the life will be like without it.Everyone should do his best to save electricity. Don t forget to turn off lights or other electric machines when we finish working. Save forests. They are useful .Please stop cutting them down and use recycled paper instead. Make our world a green one to live in. Recycle useful rubbish. Plenty of rubbish can be recycled like cans,paper, bottles, and so on. We can save resources in this way. | 
