While Wisconsin is blessed with many natural areas, our wildlife still faces several threats over the long term.
First because our population is growing and our cities are spreading into the countryside, fewer natural wildlife habitat areas are left each year. Some wildlife species, such as deer, rabbits and chipmunks, are adaptable to many conditions, but other creatures have very specific plant, moisture and temperature requirements. These are the endangered species which we risk losing if we don't preserve enough amounts of habitat for their survival.
Next, because many types of plants and animals have specific habitat requirements, climate change could cause disastrous losses of wildlife species from Wisconsin. A one or two degree change in average annual temperature will translate into large changes in Wisconsin, affecting snow cover in the winter and excess heat in the summer. Plants and wildlife are sensitive to moisture changes, so they will be harmed by this dryness. Unfortunately, trees and plants can't simply pick up and move to a more hospitable location. Instead, they will die where they stand, exposing and starving the wildlife that depend on them. Drought tolerant plants and trees will gradually spread to replace them by seed, but this process takes time. In many parts of Wisconsin, natural habitat is chopped up and isolated in small islands.
In addition, over the past 150 years, many nonnative plants, mollusks(软体动物), insects, fish, birds, mammals, and diseases have found their way to Wisconsin. These “aliens” are often aggressive competitors with native wildlife, especially after they've left their own natural environments and controls.
【2016届高考英语二轮复习课时提升练:5 必修2 Unit 5 Rhythm(北师大版)】相关文章:
★ 【人教版】2014届高考英语一轮复习指导考点针对练:必修2 unit4《Wildlife protection》
★ 湖南省长沙县实验中学2016届高三英语二轮复习书面表达复习重点话题指导专题17 体育运动话题指导(教师版)
★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ题型重组训练:第15组(含解析)
★ 四川省2016届高考英语一轮复习课时作业(41) Module 5 Ethnic Culture 外研版选修8
★ 2017高考四川省广安市英语阅读理解一轮系列训练:22(含解析)
★ 2017高考四川省广安市英语阅读理解一轮系列训练:4(含解析)
★ 【浙江专用】2014届高考英语一轮复习课时作业(二十)必修4Unit 5《Theme parks》
★ 【北师大版】2014届高考英语一轮复习指导课时作业:Unit 2 B卷 Word版含解析
★ 【课堂新坐标】2017届高考英语(通用版)二轮复习书面表达专题训练:技法2 引人入胜的开篇语(含解析)
★ 2017高考四川省广安市英语阅读理解一轮系列训练:20(含解析)
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21