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
According to the new research, the odd shape mounds were formed by______.
According to the new research, the odd shape mounds were formed by______.
admin
2012-05-18
103
问题
According to the new research, the odd shape mounds were formed by______.
Scientists who’ve been studying oddly shaped rock formations in western Australia said it could be fossils from the earliest life on earth, microbes which flourished some 3.4 billon years ago. The scientists say that the different structures suggest that primitive life can quickly diversify, giving it better chance of developing on other planets. For decades scientists have argued about the meaning of rocky outcrops in western Australia called stromatolites. These odd shape mounds were believed by some to have been formed by chemical or geographical events. Others suggest that they were in fact created by ancient microbes. Now this research indicates that the formations are just too complex to have been formed by chemicals. A team of scientists studied thousands of stromatolites and were able to describe 7 different categories. According to the researchers, this proves that the formations weren’t random, but were in fact formed by microbes about 3.4 billion years ago.
选项
A、chemical events
B、geographical events
C、microbes
D、stromatolites
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/MViO777K
0
专业英语八级
相关试题推荐
Whatisthegenerationwithasudden,largeincreaseinbirthratecalledintheUnitedStatesafterWorldWarⅡfrom1947to196
TheFutureofPCMarketThefirstDevelopersConferenceinChinamarksamajormilestoneforMicrosoft,becausethesuccesso
Asimplifiedlanguagederivedfromtwoormorelanguagesiscalledapidgin.Itisacontactlanguagedevelopedandusedbypeop
Asimplifiedlanguagederivedfromtwoormorelanguagesiscalledapidgin.Itisacontactlanguagedevelopedandusedbypeop
WhichofthefollowingsportswasNOTinventedinBritain?
Artneedsasuper-richeliteinordertoflourish,accordingtoprofessorofEnglishatLondonUniversity,LisaJardine.Jardine
Intheworldofentertainment,TVtalkshowshaveundoubtedlyfloodedeveryinchofspaceondaytimetelevision.Andanyonewho
"Lead(metal)"and"lead(dog’shead)"arespeltinthesameway,butpronounceddifferently.Thiskindofsenserelationiscal
Anewstudyusesadvancedbrain-scanningtechnologytocastlightontoatopicthat【M1】______psychologistshavepuzzledover
Peoplecanberelativelyrichonlyifyouarerelativelypoor,andaspowerismainlyinthehandsoftherich,publicpolicies
随机试题
Itwashisdoctorwhoadvisedthathe______aholidayawayfromthecity.
患者男,16岁。因发热、四肢关节痛1周来诊。查体:右眼球突出。检测WBC53.1×109/L,Hb80g/L,PLT56×109/L;骨髓涂片示原粒细胞0.85,早幼粒细胞0.07,POX强阳性。诊断为白血病。患者可能出现的特殊临床表现是
异丙嗪属
河豚毒素含量最高的是
分配管理指的是对利润分配的管理;本书所指利润分配是指对税前利润的分配。()
根据企业所得税法律制度的规定,关于确认收入实现时间的下列表述中,正确的是()。
薪酬战略的基本目标包括()。
【2015年江西】不属于师德规范的是()。
若对有18个元素的有序表做二分查找,则查找A[3]的比较序列的下标为()。
假设A证券的预期报酬率为10%,标准差是12%。B证券的预期报酬率是18%,标准差是20%。假设等比例投资于两种证券,即各占50%,且两种证券的相关系数为-1。要求:计算可以任意改变投资权重时可以达到的最小方差组合对应的标准差和预期报酬率,以及为最小方
最新回复
(
0
)