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
2024-09-19
0
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:https://tihaiku.com/zcyy/3764776.html
相关试题推荐
Accordingtothenewsitem,whatmake(s)themajorbushfirespread?[br][origi
WhatmightbeindangerbecauseofthecrisisinKenyaaccordingtothenewsite
Accordingtotheman,whichofthefollowingisNOTthereasonwhythepartyis
Accordingtotheman,whichofthefollowingisNOTthereasonwhythepartyis
Accordingtothenewsitem,theprotestershave______.[originaltext]It’sa
InwhichyearwasthefirstEnglishdictionarypublished?[br][originaltext]
InwhichyearwasthefirstEnglishdictionarypublished?[br][originaltext]
Whatisthewoman’sobstacleaccordingtotheconversation?[br][originaltext]
Whatisthewoman’sobstacleaccordingtotheconversation?[br][originaltext]
Accordingtothepassage,whatwaslifelikeinasmallcommunity?[br][origin
随机试题
They’restillkids,andalthoughthere’salotthattheexpertsdon’tyetkn
[originaltext]YoucouldsaythatJosephCornellbecameanartistbecauseof
【B1】[br]【B5】[originaltext]AccordingtoUKgovernmentfigures,Englishlit
关于税收管辖权的说法,正确的是()。A.实行居民管辖权的国家有权对非本国居民
平行结转分步法下,产成品成本份额的计算方法是()。A.产成品实际产量乘以单位约当
岩石经化学风化改变了其原来的成分,形成一种颗粒很细的新矿物,叫()。A.原生矿
A.积极治疗可缓解症状不易根治 B.预后差,病死率30%~60% C.转为胰
银行代理黄金业务的种类包括()A:条块现货B:金币C:黄金基金D:纸黄金
投资项目决策分析与评价的基本要求包括贯彻落实科学发展观、资料数据准确可靠和()
目前,国际上从立法角度认可安乐死的国家是A.澳大利亚 B.美国 C.荷兰
最新回复
(
0
)