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可适当增加从句和复杂句使用；用词灵活多样，但学术词汇的积累还有很大的空间；语言不流畅；连词使用偏少。
It is universally known that human activities have exerted negative effect on plants and animal species. Some people believe that it is too late to change this situation, while others assume disapprove. To my view, although our environment is damaged, it's not too late to be improved. Those who claim that nothing can be done to this problem may cite that environmental effects can never be altered. The natural food chain is a whole circle, if one specie is endangered or even die out, it not only exerts impacts on itself, but also on other animals plants that feed on it. During the past several centuries, many dozens of plants and animal species have become endangered or extincted due to the irreplacable effects human activities have caused on our environment. Those who are still alive are faced with decreasing inhabitants and food. However, people who believe it's not too late would argue that our environmental is not as serious as it appears. First of all, species distinction is a natural selection such as dianosaurs. Besides, scientists now and then find new species nowadays. Secondly, the fact that human activities have caused adverse impacts on plants and animals should only encourage us to take actions to fix it rather than watching it get worse. From my perspective, environmental issues are pretty serious in many parts of the world. It is our responsbility to make our earth a better living environment because of what we have done. Reservations should be protected to reduce the human influence. At the same time, relative laws should be set to give heavy penalty to those who dare violate the rules. In conclusion, human activities have exerted many negative effects on plants and animal species. But, it's never too late to change this situation.
