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
2024-01-03
8
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://www.tihaiku.com/zcyy/3330262.html
相关试题推荐
(Fossil)recordssupporttheassumption(which)microorganisms(were)thefirst
Photographydisseminatesinformation(abouthumanity)andnature,recordsthe(v
THEDOMESTICATIONOFANIMALS1Thedomesticationofwildspecies
THEDOMESTICATIONOFANIMALS1Thedomesticationofwildspecies
THEDOMESTICATIONOFANIMALS1Thedomesticationofwildspecies
THEDOMESTICATIONOFANIMALS1Thedomesticationofwildspecies
THEDOMESTICATIONOFANIMALS1Thedomesticationofwildspecies
THEDOMESTICATIONOFANIMALS1Thedomesticationofwildspecies
THEDOMESTICATIONOFANIMALS1Thedomesticationofwildspecies
THEDOMESTICATIONOFANIMALS1Thedomesticationofwildspecies
随机试题
如今,杂志产业有了巨大的发展,延伸到各个可以想象得到的领域,以满足人们的各种兴趣。有周刊杂志,它主要涉及时事报道;还有月刊杂志,它们的制作更精美,每月发
[originaltext]Comparedtomosthigh-incomecountries,childpovertyisane
[originaltext]W:Didyouhaveagoodtimelastweekend?M:Yes,Idid.Ivisite
银行汇票的出票银行即为银行汇票的( )。A.付款人 B.收款人 C.担保人
患者,男性,25岁,慢性肾小球肾炎继发慢性肾功能衰竭入院。水肿、虚弱、乏力,血压
通过解析法来计算VaR时,随着风险因子的降低,协方差矩阵的估计变得异常困难。(
A.蒺藜 B.地龙 C.蜈蚣 D.石决明 E.青黛能平肝潜阳的药物是
下列各项中,属于公司并购支付方式的有( )。A.现金支付方式 B.股票对价方式
商业银行计提的贷款损失准备和不良贷款余额之比为()。A.杠杆率 B.拨备覆
根据土地增值税法律制度的规定,下列各项中,不属于土地增值税免税项目的是()。A
最新回复
(
0
)