首页
登录
职称英语
Researchers have identified 1.4 million animal species so far—and millions r
Researchers have identified 1.4 million animal species so far—and millions r
游客
2024-01-31
69
管理
问题
Researchers have identified 1.4 million animal species so far—and millions remain to be discovered, named, and scientifically described. So how much would it actually cost to【C1】______every animal on Earth? A pair of Brazilian scientists has crunched(详细计算)the numbers and【C2】______up with an answer: $ 263 billion.
That’s way more than the $ 5 billion that famed Harvard University biologist Edward O. Wilson estimated back in 2000—and that was for every species on Earth, not just animals. But even $ 263 billion would be a【C3】______price to pay to understand the creatures that【C4】______such essentials as agriculture, fisheries, new drugs, and energy sources, says ornithologist(鸟类专家)Joel Cracraft of the American Museum of Natural History in New York City. "Literally, the world economy runs on biodiversity," he says. "People don’t understand really, deeply how much we depend on biodiversity."
Most biologists agree that with extinction rates【C5】______and climate change looming, the【C6】______to document the planet’s biodiversity—or biota(生物区)—is urgent,【C7】______considering the essential role these life forms play in crop pollination, clean air, and other aspects of human【C8】______"We are losing species by extinction faster than
we are describing new species" according to some estimates, says biologist Antonio Marques, who【C9】______the new paper with Fernando Carbayo, both at the University of St. Paulo in Brazil. "We have to know the biota to preserve and conserve the biota," he says. Besides the money, another huge【C10】______to a complete understanding of the animal kingdom is a global shortage of taxonomists(分类学家), experts say.
A)attempt F)effort K)obstacle
B)cheaper G)enable L)small
C)classify H)especially M)soaring
D)coauthored I)exactly N)well-being
E)come J)identify O)yet [br] 【C8】
选项
答案
N
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3410434.html
相关试题推荐
去年三星在中国销售了3000万台设备,市场占有率达到17.7%。Thecompanysold30milliondevicesinChinafor
Costly—sometimesabusive—creditcardsarebleedingmillionsofborrowerswho
Inthe1960s,medicalresearchersThomasHolmesandRichardRahedevelopeda
Inthe1960s,medicalresearchersThomasHolmesandRichardRahedevelopeda
Inthe1960s,medicalresearchersThomasHolmesandRichardRahedevelopeda
Inthe1960s,medicalresearchersThomasHolmesandRichardRahedevelopeda
Ofthemillionsofinventions,whataretheeightgreatest?A)I’vedrawn
Ofthemillionsofinventions,whataretheeightgreatest?A)I’vedrawn
Ofthemillionsofinventions,whataretheeightgreatest?A)I’vedrawn
Ofthemillionsofinventions,whataretheeightgreatest?A)I’vedrawn
随机试题
Readthetextbelowaboutagreatgift.Inmostofthelines(34-45)thereisone
ThereligiousleaderoftheChurchofEnglandis______.A、Presbyterian.B、Anglic
WhatdidtheprotestorsdotosupportAlfredoReinado?[br][originaltext]
Theairwebreatheissofreelyavailablethatwetakeitforgranted.Yetw
Theadvantagesanddisadvantagesofalargepopulationhavelongbeena(n)【C
ISO是国际标准化组织的简称。()
据对全国规模以上文化及相关产业5.9万家企业调查,2020年上半年,上述企业实现
ROM是只读存储器。其中,可以读出,也可以写入,但是在--次写操作之前必须用紫
基础心理学是研究()。 (A)正常成人心理现象的心理学基础学科 (B
证券市场组合的期望报酬率是16%,甲投资人以自有资金100万元和按6%的无风险利
最新回复
(
0
)