The text is a good example for us to learn how to write argumentation.The author is talking about biological and environmental ethics,a topic on which one must make a judgment as"A is good and B is bad.'or“A is right and B is wrong.”but in an argumentation,the author should not only GREEN RIBBON present his argument,but also provide supporting points and some examples. COw LIBERATION FRONT The text is a good example for us to learn how to write argumentation. The author is talking about biological and environmental ethics, a topic on which one must make a judgment as “ A is good and B is bad.” or “A is right and B is wrong.” but in an argumentation, the author should not only present his argument, but also provide supporting points and some examples