“We know that temperatures are going to go up,” Craine said. “We also know that warmer grasslands have grasses with less protein(蛋白质), and we now know that warmer grasslands have smaller grazers. It all lines up to suggest that climate change will cause grasses to have less protein and cause grazers to gain less weight in the future.”
Craine said the results of climate change in coming decades can already be seen by comparing bison in cooler, wetter places with those in warmer, drier places. For example, the average 7-year-old male bison in South Dakota weighed 1, 900 pounds, while an average 7- year-old male bison in Oklahoma — a warmer place — weighed 1, 300 pounds.
“The difference in temperature between those two states is around 20 degrees Fahrenheit, which is about three times the projected increase in temperatures over the next 75 years,” Craine said. “It is a clear indicator that long-term warming will affect bison and is something that will happen across the U.S. over the next 50-75 years.”
1..In the next fifty years, researchers Say, bison will ________.
A. become smaller and lighter
B. disappear in the Great Plains
C. play a less important part
D. adapt to different climate changes
2.The underlined word “grazers” probably refers to ________.
【2016届高考英语二轮复习阅读理解一百四十集选练:(75)】相关文章:
★ 【人教版】2014届高考英语一轮复习指导考点针对练:选修6 unit3《A healthy life》
★ 2017高考四川省广安市英语阅读理解一轮系列训练:27(含解析)
★ 【课堂新坐标】2017届高考英语(通用版)二轮复习短文改错专题训练:考法3 行文逻辑错误(含解析)
★ 2014届高考英语一轮复习课时作业(四十八)选修8Module 6《The Tang Poems》(外研版)
★ 2016届高考英语二轮复习阅读理解一百四十集选练:(61)
★ 【北京专用】2014届高考英语一轮复习方案课时作业:必修1 Unit 3 Travel journal
★ 安徽省淮南市2014高考英语一轮单项选择及文章训练(4)及答案
★ 安徽省淮南市2014高考英语一轮单项选择及文章训练(1)及答案
★ 【浙江专用】2014届高考英语一轮复习课时作业(三十五)选修7Unit 5《Travelling abroad》
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21