首页
登录
职称英语
[originaltext] The rising level of noise in urban areas may be preventing so
[originaltext] The rising level of noise in urban areas may be preventing so
游客
2023-06-30
32
管理
问题
The rising level of noise in urban areas may be preventing some species of songbirds from setting up home in developed areas, a study has concluded.(19)Canadian researchers found that noisy surroundings masked the lower frequencies of bird songs, affecting the way some species communicated.(21)Unable to hear all elements of a song, females could perceive singing males as ill-suited mates, they added. There has been a growing interest in preserving or increasing the biodiversity of songbirds in urban areas. This leads to the investigation on whether there was a link between bird diversity and noise levels. Dr. Proppe is a professor of Calvin College. His team surveyed species at 113 sites in natural areas within the city of Edmonton.(20)They found that the number of species at each location tended to be lower when noise levels were higher. The decrease in species richness was one of the study’s major findings. The study also focused on seven species that did inhabit the area to see if their abundance was affected as the urban noise increased.
What they found is that three of the species did have lower abundances in locations that were noisier.(21)Dr. Proppe suggested that females may perceive the song as abnormal if they could not hear the lower frequencies. If the adults stop pairing and mating, then the number of offspring would decrease as a result. Over a period of time, this could have a potential impact on the abundance of the species.
19. How does the urban noise affect the communication of birds?
20. What did Dr. Proppe’s team find?
21. Why do some birds stop pairing and mating in some urban areas?
选项
A、There is more interest in preserving songbirds in urban areas.
B、There are altogether 113 species of birds in the city of Edmonton.
C、The higher the noise levels are, the less species of birds there are.
D、The increase in species richness is higher in natural areas.
答案
C
解析
短文中指出,Proppe的研究小组发现,当噪音水平上升时,鸟类的种类数量会有所下降。由此可知,噪音水平上升,鸟类物种减少。
转载请注明原文地址:https://tihaiku.com/zcyy/2796971.html
相关试题推荐
[originaltext]W:Hi,Rex.How’syourhistorypapergoing?M:It’scomingalong.
[originaltext]W:Theairqualityinthiscityisawful![9]Thepollutionlevels
[originaltext]W:Theairqualityinthiscityisawful![9]Thepollutionlevels
[originaltext]W:We’vealreadyboughtanoven,awashingmachine,adishwasher,
[originaltext]W:We’vealreadyboughtanoven,awashingmachine,adishwasher,
[originaltext]W:We’vealreadyboughtanoven,awashingmachine,adishwasher,
[originaltext]W:We’vealreadyboughtanoven,awashingmachine,adishwasher,
[originaltext]Anewstudyfoundthat43percentofboyandgirlparticipant
[originaltext]Peoplewithbiggerbrainstendtoscorehigheronstandardte
[originaltext]Peoplewithbiggerbrainstendtoscorehigheronstandardte
随机试题
Howlongdoesaninterviewusuallylastaccordingtothespeaker?[br][origina
Nooneknowsexactlyhowmanydisabledpeoplethereareintheworld,but【C1
经济增长会增加社会福利,缓解失业压力,所以经济增长越快越好。()
患者,男性,60岁,阴囊肿物2个月。开始提重物时,阴囊出现肿块,可用手还纳,无痛
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性: A.如
下列哪些药物可增加替罗非班的出血风险A.肝素 B.阿司匹林 C.阿加曲班
(2010年真题)下列关于股利分配政策的表述中,正确的是()。A.公司盈余的稳
应急预案在应急救援中的重要作用体现在()。A.应急预案确定了应急救援的范围和体系
1.背景材料:某工程签约合同总价为2000万元,开工预付款为合同总价的10%
桥梁扩建加宽,新旧桥梁采用上部结构连接而下部结构分离方式时,下列说法错误的是(
最新回复
(
0
)