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
考研
Marine Life If the Census, Bureau thinks it has its hands full counting Americans, imagine what scientists are up against in
Marine Life If the Census, Bureau thinks it has its hands full counting Americans, imagine what scientists are up against in
admin
2014-06-13
78
问题
Marine Life
If the Census, Bureau thinks it has its hands full counting Americans, imagine what scientists are up against in trying to tally every living thing in the ocean, including microbes so small they seem invisible.
The worldwide Census of Marine Life has four field projects focusing on hard-to-see sea life such as tiny microbes and zooplankton in the sea bed. Tiny as individuals, these life forms are massive as groups and provide food that helps underpin better-known living things.
"Scientists are discovering and describing an astonishing new world of marine microbial diversity and abundance, distribution patterns and seasonal changes," said Mitch Sogin of the Marine Biological Laboratory in Woods Hole, Mass. , leader of the International Census of Marine Life. The Census of Marine Life, which is scheduled to be reported Oct. 4 in London, has involved more than 2,000 scientists from more than 80 nations. The decade-long census has discovered more than 5,000 new forms of marine life. Researchers think there may be several times that many yet to be found.
Previous updates have focused on larger creatures, such as an Antarctic expressway where octopuses ride along in a flow of extra salty water, the deepest comb jellyfish ever found and The White Shark Cafe, a deep Pacific Ocean site where sharks congregate in winter.
Now the researchers have turned to the tiniest of things, some of which burrow in the sea floor. Remotely operated deep-sea vehicles discovered that roundworms dominate the deepest, darkest abyss. Sometimes, more than 500,000 can exist in just over a square yard of soft clay. Only a few different types have been studied. There are also 16, 000 or more species of seaworms. There are loriciferans, which the scientists call "girdle wearers" because of hind shells resembling a corset. And there are hundreds of types of tiny crustaceans.
"Such findings make us look at the deep sea from a new perspective," says researcher Pedro Martinez Arbizu of the German Center for Marine Biodiversity Research. "Far from being a lifeless desert, the deep sea rivals such highly diverse ecosystems as tropical rainforests and coral reefs."
What is said about smaller marine life?
选项
A、It is impossible to count its number owing to its invisibility.
B、It is found that all smaller marine life live in the sea bed.
C、Some smaller marine life are tiny while others are massive.
D、Some familiar creatures depend on smaller marine life for food supply.
答案
D
解析
根据题干关键词smaller marine life定位到文章第2段第2句:Tiny as individuals,theselife forms are massive as groups and provide food that helps underpin better—known livingthings.可知,较小形体的海洋生物为我们所熟知的生物提供了食物。
转载请注明原文地址:https://kaotiyun.com/show/DmK4777K
0
考研英语一
相关试题推荐
Anyonewhodoubtsthatchildrenarebornwithahealthyamountofambitionneedspendonlyafewminuteswithababyeagerlylea
Ifanoccupationcensushadbeentakenintheeleventhcenturyitwouldprobablyhaverevealedthatquite90percentofthepeop
Americanssufferfromanoverdoseofwork.【C1】______whotheyareorwhattheydo,theyspend【C2】______timeatworkthanatanyt
[A]NegotiationIsaTwo-wayStreet[B]CorrectCommonNegotiationMistakes[C]DotheRightKindofHomework[D]Don’tBeAfrai
Manyindustrieshavegoodreasonforcautionatthemoment,giventhefearsofa"doubledip"intheworldeconomy.Butthemood
Extraordinarycreativeactivityhasbeencharacterizedasrevolutionary,flyinginthefaceofwhatisestablishedandproducing
AMGEN,theworld’sbiggestbiotechnologycompany,madeitsfortunefromadrugthatfortifiesthebloodofpatientswhoareunde
Thefollowingparagraphsaregiveninawrongorder.ForQuestions41-45,youarerequiredtoreorganizetheseparagraphsintoa
ThebeginningofwhatwastobecometheUnitedStateswascharacterizedbyinconsistenciesinthevaluesandbehaviorofitspop
TimothyBerners-Lee,mightbegivingBillGatesarunforthemoney,buthepasseduphisshotatfabulouswealth—intentionally—
随机试题
麝香入丸、散,每次的用量是
下列属于国际收支平衡表中结算或平衡项目的是()。
留置作为一种担保方式,只能通过( )产生留置权。
有机熔剂及浓硝酸脱脂时,取脱脂后的溶液或酸分析,其含油和有机物不应超过()。
采用固定股利政策时,公司在较长时期内都将分期支付固定的股利额,股利不随经营状况的变化而变动。这种股利分配政策的优点有()。
某洗衣店在决定自身发展战略时,分析认为洗衣店产业是一个零散的产业。下列选项中,能够造成该产业零散的原因有()。
用正交表L8(27)安排试验时,通过方差分析发现因子A,C及交互作用A×B都是显著的,而B与D是不显著的,那么应该按()寻找最好的条件。
一天早上。张某生气地将一块肉甩在李某摊位上,称买了10元钱的肉,晚上切肉时发现肉有味变质。李某也很气愤,称自己本分做生意,质量一向有保证。张某要求退10元钱,李某拿剁肉刀咚咚地剁在案板上,坚决不退钱。争吵越来越激烈,引来不少群众围观。民警了解到因为10元钱
(2009—单选—4)明朝初年强化君主专制的措施是()。
Thelithiumbatteriesarebecomingimproperforthecellphonebecause______.Accordingtothepassage,Toshiba______.
最新回复
(
0
)