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
15
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://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
MasstransportationrevisedthesocialandeconomicfabricoftheAmericanc
【S1】[br]【S5】instruct由句式可知该处需要一个动词构成不定式做目的状语,其后的宾语为让狗做你想让做的事情,instruct意为“指导,训练”
陕西出土的秦始皇兵马俑,其表面涂有生漆和彩绘,这为研究秦代军人的服色提供了重要信
血中激素浓度极低,但生理作用却非常明显,这是因为A.细胞内存在高效能的生物扩大系
女,GP,孕33周。1个月来自觉乏力,食欲差伴恶心、呕吐,小便深黄色4~5天。查
调查显示,在中国,男性越来越时兴购买并使用洗面奶、化妆水等护肤品,还开始购买并使
液体的压强为p、速度v、密度ρ正确的无量纲数组合是()。A. B. C.
某银行最近推出一项理财产品,该产品的理财期限为6个月(如未提前终止),此银行在提
如果设计卫生桥,那么桥体龈面与牙槽嵴黏膜之间的间隙至少为A.1mm B.1
炉窑砌筑前工序交接时,不需提交证明书的是( )。A.炉子中心线和控制标高的测量记
最新回复
(
0
)