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社会与自然： Society should make efforts to save endangered species only if the potential extinction of those species is the result of human activities. 社会应该努力拯救濒危物种，只要这些物种的灭绝是人类活动的结果。 The speaker claims that society should make efforts to save endangered species only caused by human activities. I agree with the speaker insofar as saving endangered species is the responsibility of human beings. After all, human beings are the ruler of nature. But, in my perspective, merely focusing on saving those endangered species only caused by human activities is unilateral. 1. The variety of plant and animal is important to practical utilization. 1) Discovering the order of evolution; 2) Valuable gene pool and raw material drug: traditional Chinese medicine. 3) Technological imitation from the specious: sonar as a result of imitating dolphin. 2. Human should do so even from a moral position. 1) Plant and animal is the most important components of nature. When all ...die out, the day will come soon. 2) Human beings as the ruler of nature should take the responsibility to help other species. Let alone those endangered species because of human activities. 3) Men have the responsibility to rescue: pollution, environments destroy, catching and killing excessively causing the plant and animal to die out much faster. For example: tiger and whale; | 
