第258篇The Qualities of a Good Trout Stream

第258篇The Qualities of a Good Trout Stream-kingreturn
第258篇The Qualities of a Good Trout Stream
此内容为付费阅读,请付费后查看
3
限时特惠
9
您当前未登录!建议登陆后购买,可保存购买订单
付费阅读
已售 1

The Qualities of a Good Trout Stream

There are a number of streams in the United States in which trout (a species of fish) flourish. Such streams as the Gunnison River, the Battenskill River, Silver Creek, and numerous others throughout the country are famed for the abundance of trout that live in them. Yet look at the range of geographical locations in which these streams occur: from deciduous eastern forests to coniferous forests to sagebrush steppe-desert regions. Obviously, they must have something in common if all support robust populations of these fish. What are the common conditions that produce a productive and viable trout habitat?

完整版题目和答案请付费后查阅

© 版权声明
THE END
喜欢就支持一下吧
点赞0
分享
评论 抢沙发
kingreturn的头像-kingreturn

昵称

取消
昵称表情代码图片