The topic of this paper is global warming ruined our coral reefs. It argues that human being makes fast global warming and global warming may ruin our coral reefs. There are four reasons for this argument. The first is that people should develop new system of machine such as air-conditioner or refrigerator, and the second is people should not damage coral reefs. The third reason is people should conservation our forest. Finally, global warming ruin our coral reefs range with hot temperature.
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