首页
登录
职称英语
A wetland is an area where the soil is typically water-logged. Plants and an
A wetland is an area where the soil is typically water-logged. Plants and an
游客
2025-02-13
39
管理
问题
A wetland is an area where the soil is typically water-logged. Plants and animals living there depend on the we ness for their (21) Draining swamps is a widespread occurrence which kills off wildlife and, consequently, wetlands are (22) worldwide. It is a feature of wetlands that conditions vary according to (23) Water-tolerant plants grow both in and out of the water and water levels are usually (24) Wetlands naturally occur between land and water and become (25) for various wildlife during very dry periods. They also act as nurseries for different kinds of animal life. Wetlands are known to upgrade (26) by removing pollutants.
A.water quality
B.seasonal change
C.saturated soil
D.safe places
E.quite low
F.quite high
G.nutrients
H.nurseries
I.international recognition
J.farming activity
K.extinct
L.continued existence
M.commercial development
N.at risk [br]
PERRY: Hi, Opal. Any ideas about what we should do for our geography project?
OPAL: Hi, Perry. Yes, I’d like to do something on Wetlands.
PERRY: I think that’s a great idea—where do we start?
OPAL: With a definition of course—something like: ’ a marshy area of land where the soil near the surface is saturated or covered with water, forming a special habitat for wildlife’.
PERRY: And we could add: ’the flora and fauna of the area are reliant on the water-logged soil for their survival’.
OPAL: Yes, that’s a major problem actually—when commercial developers or farmers come along and decide to drain the swamps—everything dies. The practice is all too common unfortunately. Did you know that, as a result, wetlands are recognized internationally as one of the most threatened types of habitat?
PERRY: That’s right. We’ll have to be sure to discuss their importance in our assignment.
OPAL: But, first, I think we should state some of the particular characteristics of wetlands.
PERRY: Well, there are three that I can think of. To start with: wetlands are limited areas of open water, which vary depending on seasonal fluctuations.
OPAL: Yes...and the second could be that there’s usually a variety of water-tolerant flora on the banks and throughout the water.
PERRY: Of course, depending on the time of year, there may be more or less water but levels generally remain quite shallow.
OPAL: Okay...now let’s move on to the importance of wetlands.
PERRY: Shall we start with plant and wildlife habitat?
OPAL: Yes, I think we should point out that wetlands are homes for countless species of water birds, frogs, invertebrates and fish...
PERRY: ...and they support many varieties of water-loving plants...
OPAL: which brings us naturally to the topic of biodiversity—even small wetlands act as borders between land and permanent water. They turn into refuge areas or sanctuaries in times of drought and they often support rare and threatened plants and animals found nowhere else.
PERRY: Exactly. And they’re especially important as nurseries and breeding grounds for all kinds of fish, birds and invertebrates.
OPAL: Wetlands are important for improving the purity of the water, too.
PERRY: Yes, that’s because the flow of water through the wetlands is slowed by bank and in-stream plants, and so it allows sediment to settle. Nutrients, such as nitrogen and phosphorous and other pollutants are removed as the water passes through.
选项
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3955270.html
相关试题推荐
Somepeoplethinkthatgeneticallymodifiedplantsmaybeharmfulandshould
Artificialsnowisusedinagricultureasatypeof______forplantsincoldcond
【21】[br]Whichbeareatsplants?[originaltext]Interviewer:AlisonSharphassp
Awetlandisanareawherethesoilistypicallywater-logged.Plantsandan
Awetlandisanareawherethesoilistypicallywater-logged.Plantsandan
Awetlandisanareawherethesoilistypicallywater-logged.Plantsandan
Awetlandisanareawherethesoilistypicallywater-logged.Plantsandan
Awetlandisanareawherethesoilistypicallywater-logged.Plantsandan
ENDANGEREDSPECIESAlthoughwecannotdoanythingabouttheplantsandanimalst
ENDANGEREDSPECIESAlthoughwecannotdoanythingabouttheplantsandanimalst
随机试题
A—EngineFuelSystemG—contactpointB—LightsandWiresH—theelectricsystemC—
[originaltext]W:Thereisadirectflightat10o’clockoraflightat2thisa
[originaltext]W:Hey,Mike!DidyouattendMr.Johnson’sseminarontheHistory
CivilservantisnowthehottestwordinChina,andthousandsofpeopleare
下列()属于划分完工产品成本与在产品成本的方法,能使某种产品本月发生的生产费用就
下列关于基金宣传推介材料的定义及范围的说法错误的是()。A.基金宣传材料是投资
上小学三年级的小明看到班上的同学大多拥有个人电脑,也要求其父母买一台。在这次购买
下列不属于志愿者需要管理的原因的是()。A.社会越来越关注志愿服务所带来的
教学素质是指以人的()为基础,通过()和自我提高而形成的身心特征
非线性药动学的特点包括A.药物的消除不呈现一级动力学特征,即消除动力学是非线性的
最新回复
(
0
)