issue154 【METTLE小组】第三次作业 by holacola

holacolaUID: 2313791

issue121
"At various times in the geological past, many species have become extinct as a result of natural, rather than human processes. Thus, there is no justification for society to make extraordinary efforts, especially at a great cost in money and jobs, to save endangered species."

position：with the time changed, the human processes becoming more and more serious working on earth, we cannot ignore the threat of endangered species' extinction.

a: long ago, man has not got the capability to change the world anyway, animal's extinction is just the    result of natural.

b: but now, human being is at the top of the whole world living multilocked biocycle. can prove its   behavior will excessively affect the biosphere.

c: Human made some mistakes lead to some species' extinction, so we should reverse it or fix it and   prevent it.

eager_beaverUID: 2349567

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