首页
登录
职称英语
The presence of microorganisms that produce a toxin causes seawater to turn brow
The presence of microorganisms that produce a toxin causes seawater to turn brow
游客
2024-01-13
5
管理
问题
The presence of microorganisms that produce a toxin causes seawater to turn brownish red, a phenomenon known as a red tide. Sea otters do not feed in areas where clams, their main source of food, have become contaminated with this toxin. According to a proposed explanation of the otters’ behavior, the otters sample the clams in a potential feeding area and can taste any toxin in them. Which of the following, if true, would most strongly indicate that the hypothesis described in the last sentence of the passage is not correct?
选项
A、In some of the areas where red tides occur, neither clams nor sea otters are indigenous species.
B、The presence of sea otters in a given area has a significant effect on which other marine organisms are to be found in that area.
C、When seawater in an area unaffected by red tide is artificially dyed brownish red, sea otters do not feed on the clams in that area.
D、If the clams in a given area are contaminated with toxins, sea otters move to other areas in search of food.
E、Although very small amounts of the toxin produced during a red tide are not harmful, large doses can be fatal to animals the size of sea otters.
答案
C
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/3358530.html
相关试题推荐
Acertaintirecompanycanproducetiresatacostof$22,500perbatchplus$9
Excessinventory,amassiveproblemformanybusi-nesses,hasseveralcauses,s
Excessinventory,amassiveproblemformanybusinesses,hasseveralcauses,
Excessinventory,amassiveproblemformanybusinesses,hasseveralcauses,
ThebodyofanyoneinfectedbyvirusXwill,afteraweek,produceantibodiesto
Scientificresearchthatinvolvesinternationalcollaborationhasproducedpaper
Prolongedandunseasonablefrostsproducefrostringsindeciduoustrees,which
ManyresearchersbelievethatthepresenceofRNAinbraincellsisthebiochemi
Byexaminingfossilizedbeetles,aresearchteamhasproducedthemostdetailed
Ifaninvestmenthasproducednoprofit,taxreliefpredicatedonhavingmadeth
随机试题
Accidentsarecaused;theydon’tjusthappen.Thereasonmaybeeasytosee:
WhichofthefollowingisNOTtrueaccordingtotheconversation?[originaltext]
Highstreetshopsuseavarietyofmeanstoattractshoppers,suchasstriki
科学家:已经证明,采用新耕作方法可以使一些经营管理良好的农场在不明显降低产量、甚
( )—般是项目初步可行性研究关注的问题。A.合作方式 B.项目进度安排
私拆学生信件、翻学生书包等行为侵犯了学生的人格尊严权。(常考)()
护士进行臀大肌注射的定位,正确的是A.髂前上棘与臀裂顶点连线内上1/2处 B.
薏苡仁与茯苓不相同的功效是A.利水渗湿 B.清热排脓 C.宁心安神 D.舒
气性坏疽的临床特点是A.局部红、肿、热、痛不明显 B.一般白细胞不升高 C.
下列咨询单位的相关情形中,不属于资信等级评价时应考虑的因素( )。A.合同业绩
最新回复
(
0
)