Submitted on: 27 June 2014.
Revised on: 20 August 2014.
Accepted on: 24 September 2014.
___________________Ethics and the Environment---INDIANA UNIV PRESS
http://reply.papertrans.cn/1/90/8915/8915-32.png
http://reply.papertrans.cn/1/90/8915/8915-33.png
http://reply.papertrans.cn/1/90/8915/8915-34.png
http://reply.papertrans.cn/1/90/8915/8915-35.png
http://reply.papertrans.cn/1/90/8915/8915-36.png