首页
登录
职称英语
Traffic fumes render the scent of flowers barely recognizable to honeybees an
Traffic fumes render the scent of flowers barely recognizable to honeybees an
游客
2024-01-31
57
管理
问题
Traffic fumes render the scent of flowers barely recognizable to honeybees and could have a serious impact on their ability to find food, new research has found. Scientists discovered that reactive pollutants in diesel (柴油) destroyed key chemicals in the odour of oilseed flowers making them smell different to the bees.
"Honeybees have a sensitive sense of smell and an exceptional ability to learn and memorize new odours," said Tracey Newman, a neuroscientist at the University of Southampton. "The effect of diesel fumes on flower scent could have serious detrimental effects on the number of honeybee colonies and pollination (授粉) activity." Three-quarters of the world’s food crops rely on bees and other natural pollinators " Pollinator services are crucial to humankind," said Newman.
But there have been serious declines in natural pollinators in recent decades. A combination of factors is blamed, including the huge loss of the flower-rich habitats that sustain bees, as well as disease, and the impact of agricultural insecticides. The revelation that traffic fumes could be adding to the problems is significant, said Guy Poppy, a professor and ecologist at Southampton, who also worked on the research. He said, "Diesel exhaust is not the root of the problem, but clearly, with all the other stressors, adding another one is likely to be detrimental to bee health."
The study, published in the journal Scientific Reports, tested bees’ ability in the laboratory to recognize the aroma of oilseed rape flowers. Bees were strapped down and taught to associate floral scents with food in the form of sugar solutions. Once the bees learned the connection they began sticking their tongues out in anticipation of food even if it was not offered—an indication that they recognized the smell. When the scent was presented without pollutants the bees recognized it 98% —99% of the time. But after the scent was mixed with levels of diesel exhaust matching those found at roadsides, the bees only recognized it 30% of the time. [br] By saying "Diesel exhaust is not the root of the problem, but clearly, with all the other stressors, adding another one is likely to be detrimental to bee health," Guy Poppy probably means________.
选项
A、Although diesel exhaust is not the main problem, it still affects bee’s health.
B、The effect of diesel exhaust is not very important to bee.
C、Diesel exhaust will not influence bee’s health.
D、There are still other stressors that will affect bee’s health.
答案
A
解析
该句的句意为:柴油车尾气并不是问题的根源,但很明显,和其他问题所带来的压力一起加入的另一个影响因素可能会对蜜蜂健康带来不利的影响。因此A的表述更符合,“尽管柴油车尾气不是主要的问题,但仍然影响了蜜蜂的健康”。
转载请注明原文地址:http://tihaiku.com/zcyy/3408770.html
相关试题推荐
[originaltext]Roadtrafficcrasheskill1.25millionpeopleeachyearworld
[originaltext]Roadtrafficcrasheskill1.25millionpeopleeachyearworld
[originaltext]Roadtrafficcrasheskill1.25millionpeopleeachyearworld
Itisallverywelltoblametrafficjams,thecostofpetrolandthequick
Itisallverywelltoblametrafficjams,thecostofpetrolandthequick
Itisallverywelltoblametrafficjams,thecostofpetrolandthequick
WhenwetalkaboutAmericansbarelyintoadulthoodwhoaresaddledwithunbe
WhyYouShouldn’tFreakOutAboutSwarmingHoneybees—andHowtoSaveBeesFr
WhyYouShouldn’tFreakOutAboutSwarmingHoneybees—andHowtoSaveBeesFr
WhyYouShouldn’tFreakOutAboutSwarmingHoneybees—andHowtoSaveBeesFr
随机试题
NocountryintheworldhasmoredailynewspapersthantheUSA.Therearealm
Burnoutcomeswhentherealityoflifeislessthanourexpectations.Andit
Valentine’sDayisapproaching.Timetomakeachecklist:Didyousenda
Normallyastudentmustattendacertainnumberofcoursesinordertogradu
Job-huntingisatoughchallengetothegraduates.Someonesaysgraduationm
维A酸与过氧苯甲酰联合应用治疗寻常痤疮时,正确的用法是()。A:睡前应用过氧苯
信号杂质是指()A.自然界广泛存在的,在多种药物生产和贮存中易引入的杂质
专家发现,传播疟疾的蚊子被人的气味分子吸引,抗击疟疾的设备负责消除空气中的人体气
女性生殖系统最常见的结核病是 A.子宫内膜结核B.卵巢结核C.输卵管结核
牙体缺损修复时,不属于龈下边缘适应证的是( )。A.牙齿已坏到龈下 B.充填
最新回复
(
0
)