首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Often conjuring images of dank, smelly, mosquito-infested wastelands, upon closer look, wetlands are actually biologically diver
Often conjuring images of dank, smelly, mosquito-infested wastelands, upon closer look, wetlands are actually biologically diver
admin
2022-06-07
51
问题
Often conjuring images of dank, smelly, mosquito-infested wastelands, upon closer look, wetlands are actually biologically diverse and productive ecosystems. Home to a variety of plant life, including floating pond lilies, cattails, cypress, tamarack, and blue spruce, wetlands support diverse communities of invertebrates, which in turn support a wide variety of birds and other vertebrates. Primary consumers from crustaceans, mollusks, and aquatic insect larvae to muskrats, geese, and deer rely on the abundance of algae, plants, and detritus for food. Wetlands also support a variety of carnivores, including dragonflies, otters, alligators, and osprey. Thus, wetlands of the world maintain biologically diverse communities of ecological and economic value.
Many ecologically and economically important species call wetlands home for at least part of their lives. For instance, commercially important fish and shellfish, including shrimp, blue crab, oysters, salmon, trout, and seatrout rely on, or are associated with, wetlands. Wetlands are also critical habitat for migratory birds and waterfowl, including ducks, egrets, and geese. In fact, more than one-third of the species listed as threatened or endangered in the United States live solely in wetlands and nearly half use wetlands at some point in their lives. As such, many wetlands are often recognized as important conservation or restoration targets.
While covering only six percent of the Earth’s surface, wetlands provide a disproportionately high number of ecosystem services, in addition to maintaining biodiversity. For instance, wetlands also mitigate floods, protect coastal areas from storms, improve water quality, recharge groundwater aquifers, serve as sinks, sources, or transformers of materials, and produce food and goods for human use. When evaluating the economic value of these various functions, scientists concluded that the economic value provided by wetland ecosystems exceeded that provided by lakes, streams, forests, and grasslands and was second only to that provided by coastal estuaries.
With mitigation, wetlands are created, restored, or enhanced to replace wetland loss due to development The Ramsar Convention, an international treaty aimed at conserving wetlands, requires member countries to develop national wetland policies, to establish wetland reserves, and to designate one or more wetlands as an area of international importance. All these efforts are designed to protect or conserve wetlands and the ecosystem services they provide.
In coastal wetlands, tidal influence drives the movement and distribution of water and can range from permanent flooding in subtidal wetlands to less frequent flooding in others, with changes in water level occurring daily or semi-daily. Inland wetlands, which lack daily tidal influences, can also be permanently flooded on one extreme or intermittently flooded on the other extreme, with fluctuations over time often occurring seasonally. It is the balance of water inflows and outflows, or the water budget, as well as the geomorphology and soils that determine the timing, duration, and patterns of flooding in a wetland.
A dragonfly is a carnivore because its menu includes________.
选项
A、insects
B、cattails
C、muskrats
D、seatrouts
答案
A
解析
本题问蜻蜓的食物是什么。根据常识可知蜻蜓以昆虫为食,故选A项。本题也可通过排除法解题,后三项分别是B项香蒲、C项麝鼠和D项河鳟,显然都不是蜻蜓的食物,故排除。
转载请注明原文地址:https://kaotiyun.com/show/I4MO777K
本试题收录于:
CATTI二级笔译综合能力题库翻译专业资格(CATTI)分类
0
CATTI二级笔译综合能力
翻译专业资格(CATTI)
相关试题推荐
GlobalWarmingControversyVocabularyandExpressionscontroversyemissionsnon-committalprojectionscur
HackersAttackUSStateDepartmentComputersTheU.S.StateDepartmenthascloseditspublicemailsystemandwebsitesafter
TheEnglishPubVocabularyandExpressionstaverndartsboardontaphardtackalehousepooltable
Americans’MarriageandFamilyMarriageintheUnitedStatestendstolookmorelikeserialmonogamythanlifetimepartnershi
ThanksgivingDayiscelebratedwithalotof【C1】______andmerry-makinginAmerica.CelebratedonthefourthThursdayinthe
Notonlydotheproposedwarningscontaingraphicimages,thewritteninformationwouldalsobeeasiertosee.
Despitemajorchangesinthecausesofdeathsincethe1900s,theassociationbetweendeprivationand【C1】______remainsfirmlyen
AttheinvitationofPresidentGeorgeW.Bush,IwillbeattendingandactivelyparticipatingintheGroupofEightmeetingthis
ArecentstudybyOxfordUniversityestimatesthatnearlyhalfofalljobsintheUSareatriskfromautomationandcomputersi
Iftheywillnotbeabletoreachagreementbeforetheconference,theyshallloseagoodopportunityofinvolvingthemselvesto
随机试题
导轨类型通常有()类。
悬浮红细胞质量控制要求,不正确的是
损伤后引起眼睑不能闭合的是
患者,女,35岁。有胆囊结石病史8年。一天前出现左上腹剧烈疼痛,向腰背部放射,伴恶心、呕吐,但无发热,无血尿,无黄疸,为明确诊断,首选的实验室检查是
A.血虚气亏B.气随血脱C.气虚血滞D.气不摄血E.气虚血少大出血时则出现少气乏力的表现是由于
患者,女,61岁。风湿性瓣膜病,因心源性水肿医嘱给予噻嗪类利尿药治疗。护士执行完医嘱后应重点预防
注册会计师在对应收账款函证的回函进行分析判断时,下列处理中,正确的有()。
我国的民族区域自治制度的基础是()。
[2001年GRK真题]最近5年来,共有5架W—160客机失事。面对W一160设计有误的指控,W—160的生产厂商明确加以否定,其理由是,每次W一160空难的调查都表明,失事的原因是飞行员的操作失误。为使厂商的上述反驳成立,以下哪项是必须假设的?I.如果
结合材料回答问题:材料热爱基层扎根基层“要将青春播撒在农村”工作半年,90后大学生村官、山东烟台市高新区福山园姜刘疃居民区党支部书记助理王群就吃了不少“苦头”:“初来乍到被狗撵着跑,大雨天在泥里奔波……”
最新回复
(
0
)