首页 25考研 在职考研 0元畅学 26考研

新东方在线 > 考研 > 考研英语 > 考研英语阅读理解 > 正文

扫码加入训练营

牢记核心词

学习得礼盒

考研英语阅读篇章: 南极气候变化影响海狗数量

2014-07-25 15:26:38来源：新东方在线编辑整理

阅读基础如滴水穿石，连载考研英语阅读篇章，希望大家能保持阅读好习惯。



考研英语阅读篇章： 南极气候变化影响海狗数量

　　Changes in the Antarctic climate are showing up in the fur seal population, say scientists.

　　科学家称，南极气候变化正在通过海狗种群的数量表现出来。

　　Three decades of data show the females of this species are being born smaller, and those that do survive to motherhood are breeding later in life.

　　Subtle changes in their genetics are also being recorded.

　　Researchers tell the journal Nature that a shift in a dominant climate pattern has affected the supply of the seals' primary food source - krill.

　　"There has been a significant reduction in the size and the mass of the pups at birth," explained Dr Jaume Forcada from the British Antarctic Survey (BAS).

　　"Over 27 years, we see pups being born with 8% less body mass. We also see the females breeding later in age - at least by one or two years.

　　"And when they start breeding, they are bigger than they used to be 30 years ago. This kind of thing has been seen before in all sorts of mammals, and is classically an indication of food stress."

　　The study was centred on South Georgia, a British Overseas Territory (BOT) in the South Atlantic that falls within the influence of Antarctic waters.


本文关键字: 考研英语阅读 考研英语 考研

考研英语核心词汇营

背词+听课+练习+督学，学习得礼盒

更多资料

添加班主任领资料

添加考研班主任
免费领取考研历年真题等复习干货资料

  • 1.打开手机微信【扫一扫】，识别上方二维码；
  • 2.添加班主任，可领取学习资料。
更多>>
更多内容
25考研 在职研 AI择校 去测评 领资料

关注新东方在线考研服务号

获得21考研真题及答案解析

1. 打开手机微信【扫一扫】，识别上方二维码；
2.点击【关注公众号】，获取资料大礼包。

考研资料大礼包

历年考研真题及答案解析下载

英语一 英语二 政治 数学一 数学二 数学三 西医综合 教育综合 心理学综合
立即下载
近10年考研真题及答案免费下载
更多>>
更多公开课>>
更多>>
更多资料
我要
反馈 返回
首页
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10