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
A third fossil formation containing both soft-bodied and hard-bodied animals provides evidence of the result of the Cambrian exp
A third fossil formation containing both soft-bodied and hard-bodied animals provides evidence of the result of the Cambrian exp
admin
2014-09-29
28
问题
A third fossil formation containing both soft-bodied and hard-bodied animals provides evidence of the result of the Cambrian explosion. This fossil formation, called the Burgess Shale, is in Yoho National Park in the Canadian Rocky Mountains of British Columbia. Shortly after the Cambrian explosion, mud slides rapidly buried thousands of marine animals under conditions that favored fossilization. These fossil beds provide evidence of about 32 modern animal groups, plus about 20 other animal body forms that are so different from any modern animals that they cannot be assigned to any one of the modern groups. These unassignable animals include a large swimming predator called
Anomalocaris
and a soft-bodied animal called
Wiwaxia
, which ate detritus or algae. The Burgess Shale formation also has fossils of many extinct representatives of modern animal groups. For example, a well-known Burgess Shale animal called
Sidneyia
is a representative of a previously unknown group of arthropods(a category of animals that includes insects, spiders, mites, and crabs).
"
Sidneyia
" is an example of
选项
A、a relative of Anomalocaris and Wiwaxia
B、a previously unknown Burgess Shale animal
C、an extinct member of a currently existing category of animals
D、an animal that cannot be assigned to any modern animal group
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/PGfO777K
0
托福(TOEFL)
相关试题推荐
Labelthechartbelow.ChooseyouranswersfromtheboxbelowandwritethelettersA-Hnexttoquestions28-30.
Thelibrariansaysthattrainingalwaysincludes
Completethenotesbelow.WriteNOMORETHANTHREEWORDSforeachanswer.Otherrequirementsfortheprojectextractchosen
Completethenotesbelow.WriteNOMORETHANTWOWORDSforeachanswer.Researchingtheoriginofmedievalmanus
Completethesentencesbelow.WriteNOMORETHANTWOWORDSforeachanswer.JobsatisfactionstudyResearcherswereunableto__
Choosethecorrectletter,A,BorC.ResearchprojectonattitudestowardsstudyPhoebe’smainreasonforchoosinghertopicw
Whatisthemainopinionofeachofthefollowingpeople?ChooseFIVEanswersfromtheboxandwritethecorrectletter,A-G,ne
Choosethecorrectletter,A,BorC.MuseumofAnthropologyWhenwasthemuseumoriginallyfounded?
Choosethecorrectletter,A,BorC.PacifictapaclothLargepiecesoftapaaremadefromsmallerpieceswhichare
Choosethecorrectletter,A,BorC.PacifictapaclothWhydidMaoripeopleofNewZealandstopmakingtapa?
随机试题
几种常见草种子的播种量
After_____forthejob,youwillberequiredtotakealanguagetest.
(2001年第8题)调节器官血流量的主要血管是
A.滋阴降火,凉血止血B.疏风散邪,清热凉血C.理气化瘀,活血止血D.健脾养心,益气摄血E.清热解毒,凉血止血紫癜阴虚火旺证的治法是()
女性,40岁,慢性腹泻2年,大便每天2~3次,常带少量黏液,反复粪便致病菌培养阴性,结肠镜检查见为直肠、降结肠和横结肠充血、水肿,有少数散在浅溃疡,拟诊为溃疡性结肠炎,首选的治疗方案是
依照我国《刑法》的规定,下列哪些行为不构成间谍罪?()
收费系统软件特性表现为()。
根据反应2FeCl3+SnCl2→FeCl2+SnCl4及2KMnO4+10FeSO4+8H2SO4→2MnSO4+5Fe2(SO4)3+K2SO4+8H2O均能自发正向进行,可判断出电极电位数值最大(即氧化能力最强)的电对是()。
设,A*是A的伴随矩阵,则A*x=0的通解是___________。
OneofMicrosoft’scoolpeopleisPatrickBlackburn.AsatestmanagerfortheProductGroup,Blackburn’sjobmaysoundroutine;
最新回复
(
0
)