首页
登录
职称英语
The Earth has been stripped of up to 90% of its species five times before in
The Earth has been stripped of up to 90% of its species five times before in
游客
2024-02-06
34
管理
问题
The Earth has been stripped of up to 90% of its species five times before in the past 450 million years. Now it’s about to happen again—and this time there’s no rogue asteroid(小行星)to blame. One of the first great rules of terrestrial biology is that no species is forever. The Earth has gone through five major extinction events before. The result of all of the extinctions was the same: death, a lot of it.
As increasingly accepted theories have argued—and as the Science papers show— we are now in the midst of the sixth great extinction, the unsettlingly-named Anthropocene(人类纪), or the age of the humans.
As the authors of all this loss, we are doing our nasty work in a lot of ways. Overexploitation—which is to say killing animals for food, clothing or the sheer perverse pleasure of it—plays a big role. So we get elephants slaughtered for their tusks, rhinos poached(偷猎)for their horns and tigers shot and skinned for their pelts, until oops— no more elephants, rhinos or tigers.
Habitat destruction is another big driver, particularly in rainforests. And you don’ t even have to chop or burn an ecosystem completely away to threaten its species; sometimes all it takes is cutting a few roads across it or building a few farms or homes in the wrong spots.
Then too there is global warming, which makes once-hospitable habitats too hot or dry or stormy for species adapted to different conditions. Finally, as TIME’s Bryan Walsh wrote in last week’ s cover story, there are invasive species—pests like the giant African snail, the lionfish—which hitch a ride into a new ecosystem on ships or packing material, or are brought in as pets, and then reproduce wildly, crowding out native species.
It oughtn’ t to take appealing to our self-interest to get us to quit making such a mess of what we ’re increasingly coming to learn is an exceedingly destructible world. But it’ s that very self-interest that led us to make that mess in the first place. We can either start to change our ways, or we can keep going the way we are—at least until the Anthropocene extinction claims one final species: our own. [br] According to the Bryan Walsh’ s view, which statement is NOT correct?
选项
A、The local species extinct because the ecosystem is too crowd.
B、The number of the invasive species increases easily.
C、The invasive species are from other places.
D、The invasive species killed the local animals, which causes the extinction.
答案
D
解析
细节题。细节的位置在“there are invasive species…which hitch a ride into anew ecosystem on ships or packing material,or are brought in as pets,and thenreproduce wildly,crowding out native species”,介绍了入侵物种的来源和危害,都由船或包装物或作为宠物带来,迅速繁殖,进而挤走了本地生物。A、B、C在句中都可以找出,D错在入侵物种不一定是吃掉了本地物种。
转载请注明原文地址:https://tihaiku.com/zcyy/3427032.html
相关试题推荐
[originaltext]AmericanIndiansgrewandsmokedtobaccobeforeColumbuscame
[originaltext]AmericanIndiansgrewandsmokedtobaccobeforeColumbuscame
Populationsofwell-lovedspeciessuchastheturtledove,nightingaleandc
Populationsofwell-lovedspeciessuchastheturtledove,nightingaleandc
Populationsofwell-lovedspeciessuchastheturtledove,nightingaleandc
Populationsofwell-lovedspeciessuchastheturtledove,nightingaleandc
Populationsofwell-lovedspeciessuchastheturtledove,nightingaleandc
Populationsofwell-lovedspeciessuchastheturtledove,nightingaleandc
Accustomedthoughwearetospeakingofthefilmsmadebefore1927as"silen
Accustomedthoughwearetospeakingofthefilmsmadebefore1927as"silen
随机试题
HowtoPracticeEsperanto?Thereareatleast1,000,000
设x2为f(x)的一个原函数,则f(x)=_____
某学生寝室,共住2名女生,甲女活泼好动,每周有3~4天与同学一起打乒乓球。乙女整
以下关于转诊的理解不正确的是A.医疗机构可根据病人的病情决定是否需要转诊,病人可
共用题干 张小姐于2014年为自己购买了一份终身生死两全险,与保险公司签订的合
有关女性避孕药的避孕机制错误的是A.改变子宫内膜结构,使之不利于受精卵着床 B
如果回归模型中随机误差项之间存在序列相关,则普通最小二乘估计量不是无偏估计量,也
(2021年真题)下列关于山地丘陵城市布局的表述,错误的是()。A.市中心一般
大型水利工程在()前,应按照有关规定进行竣工技术鉴定。A.阶段验收 B.竣工
患者男性,50岁。急性心肌梗死1个月,今晨再发胸痛,持续8小时不缓解,遂来急诊。
最新回复
(
0
)