首页
登录
职称英语
According to a study published this week in the journal Ecology Letters, the
According to a study published this week in the journal Ecology Letters, the
游客
2023-11-04
63
管理
问题
According to a study published this week in the journal Ecology Letters, the quantity of birds in Europe has declined by more than 20 percent in the past 30 years. While there were over 2.1 billion European birds in 1980, there are now around 1. 6 billion, says study co-author Rich Inger, an ecologist at the University of Exeter in the United Kingdom.
Most of the decline—or 90 percent—is accounted for by a shrinking population in the 36 most common species, Inger tells Newsweek. For example, throughout the continent there are now 62 percent fewer house sparrows(a common species also found in North America)than there were when Margaret Thatcher became prime minister, a decline of about 150 million animals, he says. There were also drops in the numbers of such common species as skylarks(云雀), grey partridges(灰色鹧鸪)and starlings(椋鸟).
The decline is likely due in part to habitat loss and pesticide use. The amount of land used for agriculture in Europe has greatly increased since 1980, and there are fewer places for birds to nest and find food, Inger says. At the same time, pesticide use has gone up, knocking down the number of "pests" like insects that birds prey upon, he adds. "We don’t manage the environment in a way that’s good for birds," Inger says.
The study looked at an immense amount of data collected by thousands of "citizen scientists" over 30 years in most countries in Europe, in "an insightful departure from conventional approaches to reviewing bird monitoring data," said Michael Wunder, an ornithologist(鸟类学家)at the University of Colorado-Denver who wasn’t involved in the study. Wunder says the study clearly shows that " population sizes are most strongly affected by land use patterns" like farming. The measures used to protect rare species, like restrictions on hunting in certain areas, are not enough to prevent a decline in common birds, he adds.
If we want to protect birds in general, we need to change farming practices to provide more non-crop-laden land for birds, Inger says. Reducing pesticides would also help, as research has shown that areas with high pesticide use have fewer birds. "What we can do is start more environmentally friendly farming," Inger says. "We can leave wider margins on fields, get farmers to look after hedgerows(灌木篱墙), put up more bird boxes and provide places for birds to nest. " [br] Which of the following is CORRECT about the decline of birds in Europe?
选项
A、The quantity of birds in Europe dropped by about 500 million.
B、90% of the drop in Europe occurred in the last decade.
C、Ms. Thatcher was the first one to notice the decline.
D、The most common species are the most vulnerable.
答案
A
解析
细节题。由题干中的decline of birds in Europe定位至第一段第二句。定位句中明确表示,1980年,欧洲有鸟类2.1 billion(21亿),现在只有1.6 billion(16亿),因此,鸟类数量减少了5亿,故[A]为答案。
转载请注明原文地址:http://tihaiku.com/zcyy/3156386.html
相关试题推荐
Accordingtothepassage,beforetheagreementwasannouncedMonday,thetwosid
Accordingtothepassage,beforetheagreementwasannouncedMonday,thetwosid
Heprefers______.A、towritehislettersratherthandictatingthemB、towritehi
Whatisthepassagemainlyabout?[br][originaltext]AccordingtotheU.S.
Hedidnothingbut______lettershomeallthisafternoon.A、towriteB、writingC、w
Accordingtothereport,howmanypeopleareHIV-positive?[originaltext] Onth
Thejournalistwasbroughttocourtbecause[br][originaltext]AcourtinZi
Thejournalistwasbroughttocourtbecause[originaltext]AcourtinZimbabwe
Whowouldbepardonedaccordingtothenews?[originaltext]SaudiArabiaiso
Whatisthefirstthingthatpeopleoughttodoinfaceofpollution,according
随机试题
Whocantakepartineachoftheclasses?WritethecorrectletterA,BorCnex
TheancientAztecsveneratedthecacaotreeanduseditsbeansasaformof
OurproductsaredisplayedinStandB22,______youwillfindmeduringofficeh
没有哪个国家比中国对汽车更痴狂了,这里新成为中产阶层的人们的梦想就是拥有一辆闪闪发光的(shiny)新汽车。但仅仅有汽车对这些渴望超越中产阶层的人们是不
复合树脂充填,不宜用氧化锌丁香油糊剂垫底是因为A.影响树脂与牙粘接 B.抗压强
治疗咳嗽痰稠,鼻咽干燥,属燥热伤肺者,宜选用A、升麻 B、蔓荆子 C、薄荷
茶碱类药物需监测血药浓度的原因是A.易产生副作用B.在给常规剂量情况下,血药浓度
可引起明显干咳不良反应的药物是A.ace抑制剂 B.硝酸盐类 C.β受体阻滞
组合电器送电前必须(____)合格,各项(____)项目合格,各项(____)满
下列关于账户及其基本结构的表述中,不正确的是()。A:账户是根据会计科目设置的,
最新回复
(
0
)