Start with about global warming. This is the problem all over the world as well. The problem is obvious in the 20 years, the world has higher temperature, the disaster more often. The effect was due to the green area on the world is declining.Toxic emissions into the atmosphere. We humans have a campaign to help reduce global warming, but still do not much, if we turn to practice seriously, such as reducing the use of vehicles. Avoiding the sewage into the soil.The ground was broken, and the impact to the trees.
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