首页
登录
职称英语
[originaltext] Recently completed research reveals warmer oceans caused by g
[originaltext] Recently completed research reveals warmer oceans caused by g
游客
2023-09-01
14
管理
问题
Recently completed research reveals warmer oceans caused by global warming is making it more difficult for fish to breathe and survive.
Biologists have known for years declining fish stocks arc connected to global warming, but a new study of eelpouts—big-headed fish that resemble eels—is the first to go deeper and see how warmer seas are connected to how fishes take in oxygen.
Scientists studied the relationship between sea temperature and eelpouts counts in the Southern North Sea, combining data from the field with lab investigations of eelpout physiology.
The researchers not only found the oxygen levels in the waters of the North and Baltic Seas have dropped because of increasing temperatures over the past 50 years--a factor that reduces fish population— they also discovered eelpouts need more oxygen in warmer waters, a second factor that is reducing their numbers.
A key factor in the diminishing size offish stock is increased difficulty in absorbing oxygen via respiration and blood circulation caused by the warming waters.
Animals tolerate a limited range of environmental conditions. Anything out of their tolerance can cause damage. Fish in the North Sea have evolved to tolerate a wider range of temperatures than fish elsewhere because of the large seasonal fluctuations there.
Worldwide, warming waters can be expected to strain species that require lots of oxygen, forcing them to either relocate to cooler waters or face extinction.
选项
A、Because the fish population is increasing.
B、Because the temperature there is increasing.
C、Because the temperature there is decreasing.
D、Because the ozone layer is disappearing.
答案
B
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/2977326.html
相关试题推荐
[originaltext]AyoungmanwholivedinLondonwasinlovewithabeautiful
[originaltext]Elephantslivemostlyongrass,leavesandfruit.Theyalsoe
[originaltext]Elephantslivemostlyongrass,leavesandfruit.Theyalsoe
[originaltext]M:Let’sgoswimmingoveratthestudentcenter.W:I’dliketo,
[originaltext]M:Okay.MayIseeyourdriver’slicenseplease?W:What?DidId
[originaltext]M:Okay.MayIseeyourdriver’slicenseplease?W:What?DidId
Iamamotherofthree(ages14,12,3)andhaverecentlycompletedmycolleg
Iamamotherofthree(ages14,12,3)andhaverecentlycompletedmycolleg
Iamamotherofthree(ages14,12,3)andhaverecentlycompletedmycolleg
Iamamotherofthree(ages14,12,3)andhaverecentlycompletedmycolleg
随机试题
[originaltext]SomestudentsattheOpenUniversityleftschool20yearsago
多数免疫比浊法采用的校正方法是:()A.二点校正 B.多点校正 C.
世界贸易组织的争端解决机构是总理事会,争端解决的程序是:A.成立专家小组→磋商→
热扰心神的表现是A.夺气 B.郑声 C.谵语 D.少气
在明的中央机构中,除了部、院、六科之外,合称“三法司”的是()A.通政司、都察
封闭式基金在成立后,基金管理公司即可申请其基金证券在证券交易所上市。()
患者,男性,72岁,因呼吸困难、双下肢水肿、尿少2天入院。既往有慢性咳嗽、咳痰病
甲公司是一家新型建筑材料生产企业,2019年主要财务数据如下: 单位:万元
某股份有限公司股东张某抽逃出资。根据公司法律制度的规定,下列主体中,有权对张某提
某现浇钢筋混凝土框架-剪力墙结构办公楼工程,地下一层,地上十六层,建筑面积18
最新回复
(
0
)