首页
登录
职称英语
One way to determine which planets outside the solar system might harbor lif
One way to determine which planets outside the solar system might harbor lif
游客
2025-02-19
17
管理
问题
One way to determine which planets outside the solar system might harbor life is to look for telltale signs in their light. Living organisms create a chemical disequilibrium in their environment, typically indicated by a molecule whose presence can be explained only if some presence is continually regenerating it. For example,
Earth’s atmosphere contains oxygen
because photosynthesis produces it faster than it is lost through processes such as the rusting of iron in rocks. However, chemical disequilibrium does not necessarily indicate the presence of life because, as in the case of methane on Mars, the imbalance could arise through nonbiological processes. [br] According to the passage, which of the following about the presence of a chemical disequilibrium is true?
选项
A、It may indicate the presence of life.
B、It may be the product of a nonbiological process.
C、It is something that typically is short-lived.
答案
A,B
解析
A项对应文章前三句。B项对应第四句。C项文中未提及。
转载请注明原文地址:https://tihaiku.com/zcyy/3963886.html
相关试题推荐
Onewaytodeterminewhichplanetsoutsidethesolarsystemmightharborlif
Amouse’simmunesystemgenerallyrejectsproteinsdifferentfromthoseprod
Whydosomepeopledislikegoingoutside? Well,there’revariousreasons.Tost
Yourentahousethroughanagency.Theheatingsystemhasstoppedworking.
Thegovernmentthinksthattheeducationsystemshouldbeuptodate.Follow
WhichVotingSystemisBetter?Votingisoftenportrayed
WhichVotingSystemisBetter?Votingisoftenportrayed
[img]2012q1/ct_eirm_eirread_0037_20121[/img][br]systematicdesign
TheassumptionthatthetropicalecosystemofAmazoniahasbeencreatedsolelyb
MorseCodeMorsecodeisbeingreplacedbyanewsatellite-basedsystemforsend
随机试题
Thesinglegreatestshiftinthehistoryofmass-communicationtechnologyoc
Accordingtothepassage,adognamedRicocould______.[br][originaltext]
Theconceptionofpovertyandwhatto【C1】______aboutithavechangedoverth
[originaltext]Togetadriver’slicense,youmusttakeaseriesoftests.T
[originaltext]AsmanyasamillionCubansaresaidtohaveattendedthefre
自动喷水灭火系统组件故障主要常见于报警阀组及相关组件。下列属于自动喷水灭火系统的
目前认为志贺菌致病必须具备的条件是A.过度劳累 B.暴饮暴食 C.细菌变异性
A.芍药汤加味 B.白头翁汤加味 C.神犀散 D.连理汤 E.葛根芩连汤
患者,男性,24岁,在高温环境中劳动2小时后,自感头晕、胸闷、口渴,面色苍白,大
知识点:类风湿关节炎 下述体征不属于类风湿关节炎表现的是 A.肺间质变 B
最新回复
(
0
)