首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
One of Nature’s most exciting mysteries is how pigeons find their way home over vast distances. Now German scientists believe th
One of Nature’s most exciting mysteries is how pigeons find their way home over vast distances. Now German scientists believe th
admin
2015-01-29
58
问题
One of Nature’s most exciting mysteries is how pigeons find their way home over vast distances. Now German scientists believe they have discovered how the birds do it. Research has revealed that tiny iron structures in their beaky(鸟嘴)allow them to analyze the earth’s magnetic field—much like a compass(罗盘). Through the signals picked up, the birds can work out where they are and set out on the best course home.
As well as pigeons, many other birds display a remarkable ability to fly thousands of miles to return to a specific garden or tree year after year. Scientists are suggesting they may have similar iron-containing cells in their beaks.
In the past, experts have suggested the birds use the sun and stars to navigate, although in 2004 researchers found that many follow roads rather than their internal compass to plan their route. However, scientists have long believed that they can in some way use the natural magnetism of the earth to navigate. The recent study by German scientists has revealed how this may be possible.
The research used X-rays to examine the upper beaks of pigeons. They found that within the skin lining are tiny iron-containirg particles(微粒)in nerve branches which are arranged in a 3D pattern. The team, led by Gerta Fleissner, concluded that this allows the birds to react to the external magnetic field of the planet and work out their precise location.
She pointed out that similar iron-containing cells had been found in the beaks of robins, warblers and chickens so it may well turn out to be the way that other species also navigate.
Scientists are still discovering more about the incredible abilities of the pigeon.
Questions:
The German research team was led by______.
选项
答案
Gerta Fleissner
解析
转载请注明原文地址:https://kaotiyun.com/show/lpfK777K
本试题收录于:
浙江省大学英语三级题库大学英语三级分类
0
浙江省大学英语三级
大学英语三级
相关试题推荐
Somepeoplearguethatthesolution______thedrugproblemiseducation,andwhileIacceptthateducationhas______parttoplay,
NewYork’sEmpireStateBuildingisaninternationallyknownlandmarkwhichhasbeencalled"thecathedraloftheskies".This
Ifideascansymbolizethespiritofanage,thenthesymboloftherecentappliedlinguisticageisundoubtedly"languageacqui
CulturalAttitudestowardsTimeAccordingtoanthropologistIrvingHallowell,thereisnoevidencethathumanshaveaninbor
Eagles,soaringhigh,powerful,andfearless,havealwaysmadepeoplethinkofstrength,freedomandcourage.Forthisreason,c
Eagles,soaringhigh,powerful,andfearless,havealwaysmadepeoplethinkofstrength,freedomandcourage.Forthisreason,c
Hewasafunnylookingmanwithacheerfulface,good-naturedandagreattalker.Hewasdescribedbyhisstudent,thegreatphi
Friday11March2011startedlikeanyotherdayonTwitter.Acelebritystorywastrendingthatmorning,alongwithbusinessnew
Technologychangesthewaypeoplelive.Thisarticleisaboutusingthoughttocontrolmachines.Brain-computerinterfacesmayc
BecauseAtlascoursesstarteveryMondayoftheyear,there’sboundtobeonethatfitsinwithyouracademic,personalorprofe
随机试题
A、Itspokehighlyofthemayor.B、Itmisinterpretedthemayor’sspeech.C、Itmadethemayor’sviewclearer.D、Itinterpretedthe
Whenthemixture______,itwillgiveoffapowerfulforce.
老年急性阑尾炎的临床特点是
女,45岁。无痛性肉眼血尿1个月,尿中偶有血块,伴膀胱刺激症状。B超见膀胱右侧壁有一1cm×2cm软组织影,有蒂。为明确诊断,最有价值的检查方法是()
A.卫生行政部门B.中医药管理部¨C.发展和改革委员会D.工业和信息化管理部门E.公安部门负责建立国家基本药物制度,制定国家药物政策的是
下列关于工程项目计划变更控制原则的说法中,不正确的是()。
下列应通过“应付账款”账户核算的是()。
丹霞地貌是指由陆相红色砂砾岩构成的具有陡峭坡面的各种地貌形态。以下景观属于丹霞地貌的是()。
A、 B、 C、 D、 C元素数量构成等差数列,第一组图是3,4,5,第二组图是4,5,6。
Doctorssayangercanbeanextremelydamagingemotionunlessyoulearnhowtodealwithit.Theywarnthatangryfeelingscan【C
最新回复
(
0
)