April 13, 2007 11:09am CST
What we should do to help the earth?
2 responses
@xiuluoelly (1225)
• China
23 Jul 07
Need to do a lot of things, because humanity has damaged the earth was very powerful, but the most important thing now is how to prevent the kind of air pollution,there is value to the three reforestation,Earth's surface to prevent desertification....
• China
7 Jun 07
Does not have the war to reduce the air pollution