国产精品第_久久精品国产一区二区三_99久精品_久久精品区_91视频18_国产91精品在线观看

英语听力 学英语,练听力,上听力课堂! 注册 登录
> 在线听力 > 英语高级听力 > 英语听力:自然百科 >  第45篇

英语听力:自然百科 澳洲海域发现新物种

所属教程:英语听力:自然百科

浏览:

2016年09月01日

手机版
扫描二维码方便学习和分享
https://online2.tingclass.net/lesson/shi0529/0009/9849/45.mp3
https://image.tingclass.net/statics/js/2012
Scientists on Thursday released results of a landmark study to record the diversity of life in and around Australia’s reefs. The scientists from the Census of Marine Life have reported finding hundreds of new species of marine life off two islands on the Great Barrier Reef as well as Ningaloo Reef off the western coast of Australia.

Among the most interesting observations are ctenophores, commonly known as comb jellies or pelagic gelatinous invertebrates, that give off light through bio-luminescence.

Squat lobsters, which are not lobsters at all and are more closely related to hermit crabs.

Pistol shrimp, which use their large claw to create a sound-pressure wave strong enough to kill small fish.

Star fish and brilliantly colored mollusks. All living together, and some are building hidden habitats on top of the ruins of others.

In surveying the coral on the reefs, researchers also deploy new methods that will helpstandardize measurements of coral reefs worldwide. Of the nearly 300 species of soft coral survey, the Census of Marine Life scientists say that up to one half is thought to be new species. Experts say the coral are not reef builders, but they do cover up to 25% of some areas at the study site and provide important habitat for other species. Despite the high distribution of soft coral around the world, it still remains one of the most poorly-understood groups.

Doctor Ian Poiner, CEO of one of the organizations that's participating in the expedition, reports that the only way to fully understand the implications of the threats posed to coral is to establish a baseline of bio-diversity and follow up with later censuses. Expeditions to the three sites will be repeated yearly over the course of the next three years in order to continue the census and to study the effects of the climate change and other processes over time.

用户搜索

疯狂英语 英语语法 新概念英语 走遍美国 四级听力 英语音标 英语入门 发音 美语 四级 新东方 七年级 赖世雄 zero是什么意思太原市巴黎大街英语学习交流群

网站推荐

英语翻译英语应急口语8000句听歌学英语英语学习方法

  • 频道推荐
  • |
  • 全站推荐
  • 推荐下载
  • 网站推荐
主站蜘蛛池模板: 日韩欧国产精品一区综合无码 | 国产成人精品一区二区在线小狼 | 亚洲综合精品成人啪啪 | 久久天天躁狠狠躁夜夜 | 久久青草热 | 欧美日韩亚洲精品瑜伽裤 | 亚洲欧美日本视频 | 午夜影视在线视频观看免费 | 熟妇熟女乱妇乱女网站 | 久播影院理论片在线看 | 国产亚洲一区二区三区在线 | 色偷偷8888欧美精品久久 | 国产日韩精品一区二区在线观看 | 黄色三级在线 | 一级片在线观看 | 一级特黄aaa大片大全 | 毛片一级做a爰片性色 | 国产免费福利体检区久久 | 日本黄大片影院一区二区 | 在线天堂免费观看.www | 性生大片免费观看性 | www.亚洲色图.com | 成人日b视频 | www夜片内射视频日韩精品成人 | 久久99视频精品 | 青青青久久久 | 阿v视频在线观看免费播放 啊v在线观看 | 欧洲熟妇色xxxx欧美老妇 | 卡通动漫精品一区二区三区 | 成人免费福利网站在线看 | 欧美四级在线 | 亚洲一区二区高清 | 真实的国产乱xxxx在线 | 精品国产人成亚洲区 | 日日操狠狠干 | 色综合色综合色综合色综合 | 国产成人免费高清视频网址 | 人妻体内射精一区二区三四 | 夜夜爱夜鲁夜鲁很鲁 | 午夜免费福利小电影 | 亚洲 春色 古典 小说 自拍 |