良性循环的生态农业系统与自然生态系统有什么区别?

Lay the foundation of a natural friendly recycling way.句型大概就这样吧,细节问题自己注意好了.后面什么什么区的不知道

A

从经济上说，增加就业可以增加收入，而收入增加，居民手中可支配资金增多，就可以增加消费，扩大内需，从而拉动经济增长，经济增长是增加就业的根本途径。所以，A项表达的循环过程是正确的。

A

C

桑基鱼塘”生态系统,就是地面种桑,以桑养蚕,以蚕沙(蚕屎)养鱼,以鱼塘沉积的塘泥作桑的肥料,是一个周而复始的循环性生产过程.系统内的能量流和物质循环比较明显,因而达到“鱼肥、桑茂、茧结实”..由于桑基鱼塘生态系统能充分利用自然资源,使生物资源做到多次利用、综合利用和合理利用,因此不但有较大的经济效益,而且发挥了较大的环境效益,对保护好当地的农业生态环境有着积极的作用.

物质循环
能量流动
动态
自然生存环境

Employee relationship management is used in a variety of management means and management behavior, supermarket to adjust supermarkets and employees, between employees and employees connect with each other, benign circulation and development, in order to realize the process of organizational goals. This paper expounds the concept and development of employee relationship management, employee relationship management is very important to the role of the enterprise, throughout all aspects of human resources management, all may affect the relationship between employee and enterprise field there is employee relationship management. This article also to gemma, supermarket chain, conducted a series of analysis of employee relationship management and how to improve.
网上有翻译的,或者有道翻译软件也可以

绿化环境,
如果是为了防治水土流失,
那就不应该始种草了.
水土流失的治理措施：
1）生物措施：退耕还林,植树造林.
2）工程措施：把坡地推成梯田.
工程措施与生物措施相结合,以生物措施为主,因地制宜长期坚持,
土地才能得到改善...
明显公路两旁种草并不符合水土流失的措施,
所以应该是绿化环境.

黄土高原地区主要的生态环境问题是水土流失严重，生态建设有待进一步加强，该区域人多地少，煤炭资源丰富．故选项C符合题意．
故选：C．