首页
登录
职称英语
A third fossil formation containing both soft-bodied and hard-bodied animals
A third fossil formation containing both soft-bodied and hard-bodied animals
游客
2025-02-06
33
管理
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). [br] Why does the author mention "
Anomalocaris
" and "
Wiwaxia
"?
选项
A、To contrast predators with animals that eat plants such as algae
B、To question the effects of rapid mud slides on fossilization
C、To suggest that much is still unknown about animals found in the Burgess Shale
D、To provide examples of fossils that cannot be assigned to a modern animal group
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3944822.html
相关试题推荐
Oneinterpretationregardingtheabsenceoffossilsduringthisimportant10
FossilformationsliketheBurgessShaleshowthatevolutioncannotalwaysb
AslightlyyoungerfossilformationcontaininganimalremainsistheTommoti
Thesubjectsofthepaintingsaremostlyanimals.Thepaintingsrestonbare
Thesubjectsofthepaintingsaremostlyanimals.Thepaintingsrestonbare
Thesubjectsofthepaintingsaremostlyanimals.Thepaintingsrestonbare
NotonlycouldSmithidentifyrockstratabythefossilstheycontained,he
NotonlycouldSmithidentifyrockstratabythefossilstheycontained,he
AshecollectedfossilsfromstratathroughoutEngland,Smithbegantoseet
"TheDigitalDivide"TheChallengeofTechnologyandEquityInformationte
随机试题
ThechancesofdiscoveringlifeonNeptuneareaboutamillion().A、atoneB、for
[originaltext]Woman:Somepeopleareverycynicalaboutuh...televisionasam
Thelandofapplepieandbaseball—theUnitedStatesofAmerica.Ofcourse
[originaltext]W:Hi,I’mnewhere,andIwaswonderinghowIcouldgetalibrar
不属于呋塞米的临床应用的是()A.严重水肿 B.尿崩症 C.药物中毒
下列有关舞弊的相关说法中,错误的是( )。A、舞弊风险迹象,是注册会计师在实施审
(2020年真题)以下选项中,不能用于防范债券基金流动A.准备一定的现金以备不时
霍乱的隔离期是A.隔离至临床症状消失,粪便培养连续2次阴性 B.隔离至临床症状
宗地权属状况调查是指调查人员通过现场勘查对宗地的()等基本情况的调查核实。A:土
下列起重机类型中,不需要首检的是( )。A.桥式起重机 B.流动式起重机
最新回复
(
0
)