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
The balance of nature is a delicate system of checks and counter-checks. Nature has its own way of checking the life and distrib
The balance of nature is a delicate system of checks and counter-checks. Nature has its own way of checking the life and distrib
admin
2010-07-24
57
问题
The balance of nature is a delicate system of checks and counter-checks. Nature has its own way of checking the life and distribution of the different organisms and helping their growth. An epidemic may be considered nature’s way of checking population growth. Man in his attempt to conquer nature and to utilise it to his advantage has interfered with the balance of nature, thereby creating problems of a complex nature. Nature’s ways of maintaining the balance are intricate and not easily understood and man’s application of his scientific knowledge and techniques has upset this balance so much that today, being aware of the disastrous consequences, he takes measures against them.
No animal or plant can live in isolation, for different organisms are parts of a vast dynamic complex of living things. As no man. or community is serf-sufficient, no organism can live by itself. When man interferes with the interdependence and interrelationships of the different organisms, he is, in effect, upsetting their balanced relationships and his action can have a chain reaction. If we prevent fish eggs from being deposited in a pond, we are allowing an unchecked growth of weeds. The waterfowl which feeds on tadpoles will look for alternatives, thereby tending to upset these blanced relationships. It is important that for the preservation of beauty in nature the balance of nature is maintained.
Man for his own survival has to make his peace with plant and animal life, the size and distribution of which he has interfered with. It is to be noted that in every plant and animal community there is a trend towards a balance between the different species. When each successive species is of. the right number to maintain a constant population, a balance between the different species is maintained and this state is referred to as the climax stage. Man is forever upsetting the balance of the climax stage. He has added to the numbers of animals and plants that are useful to him. In the process he has unwittingly helped the increase in the number of insects and vermin and as a result he has to wage a relentless war against them. if man continues to interfere with the balance of nature, it is possible that some animals and birds may soon become extinct. The indiscriminate hunting of whales has reduced the number of some species almost to the verge of extinction and international laws have been drawn up to protect them.
The balance of nature is to be maintained in order to prevent soil deterioration. Human intervention has altered the established relationship between the plants of an area and the soil of that area. Animals introduced by man, sheep and goats for example, have led to widespread soil deterioration. By cutting down trees or by practising unsuitable systems of agriculture, man destroys the crumb structure of soil, thereby making it susceptible to erosion. Soil erosion results in loss of soil fertility and maintaining soil fertility is considered the biggest problem facing mankind apart from the prevention of war. The increase in world population and the growth of civilisation have been the two major factors that have led man to cut down forests on an unprecedented scale and the erosion caused by the cutting down of huge areas of forests has resulted in floods on a scale hitherto unknown. Soil erosion can whittle away soil fertility and if adequate and effective measures are not taken it can become a menacing spectre tearing at the prosperity of many countries.
Pollution, in its different forms, interferes with the balance of nature. Water pollution affects nature’s balance in oceans, lakes and rivers. Man-made pollution of water is due to municipal sewage, dumping by factories and the depositing of pesticides. Solid wastes can permeate the soil and pollute lakes and rivers.
Man has to adopt the philosophy of thrift by conserving natural resources and not destroying them by interfering with the balance of nature. He has to exploit natural resources, taking the environment as a whole. He has to practise fertilization, soil conservation and water management to make a balanced use of the resources of nature possible.
We learn from the passage that to maintain the balance of nature, we will have to ______.
选项
答案
conserve our natural resources
解析
由题干关键词to maintain the balance of nature定位到文章最后一段可知,合理利用自然资源是维护生态平衡的重要方面。
转载请注明原文地址:https://kaotiyun.com/show/ufN7777K
0
大学英语四级
相关试题推荐
Forthispart,youareallowed30minutestowriteacampaignspeechinsupportofyourelectiontothepostofchairmanofthe
Forthispart,youareallowed30minutestowriteacompositiononthetitleAnIncreaseinCrime.Youshouldwriteatleast12
A、Heisapplyingforajobatasummercamp.B、Histelephoneisoutoforder.C、HeiswritingacharacterreferenceforBen.D、H
A、Hefailedtogettheteacher’ssignatureintime.B、Hegotsickthenextday.C、Hedidnotturnintheaddslipthefirstday
A、Heshouldnotdotheexperimentafterall.B、Hemustbeextremelycareful.C、Shewillhelphimdotheexperiment.D、She’ssure
A、Hesoldtraffic-countingsystemtolocalgovernments.B、HedroppedoutofhislawcourseatHarvardUniversity.C、Hefoundedh
Rob8app,27,fromKent,lovedgameswhenhewasattendingschool.Infact,helovedgamessomuchthathedecidedtobecomeaP
TheAmericaneconomicsystemisorganizedaroundabasicallyprivate-enterprise,market-orientedeconomyinwhichconsumerslarg
TheAmericaneconomicsystemisorganizedaroundabasicallyprivate-enterprise,market-orientedeconomyinwhichconsumerslarg
ItisamiraclethatNewYorkworksatall.Thewholethingisunbelievable.Everytimetheresidentsbrushtheirteeth,million
随机试题
言论自由属于我国公民的
A.条件(1)充分,但条件(2)不充分B.条件(2)充分,但条件(1)不充分C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分D.条件(1)充分,条件(2)也充分E.条件(1)和条件(2)单独都不充分,条件(1)和条件(2)联
急性胰腺炎手术指征是()。
中医“五轮学说”中,被称为“水轮”的是()。
场区高程控制网应布设成()、()或()。
采用边长25mm立方体试验样品试验时,在24h内出现自燃的物质属于()自燃物质。
建筑是凝固的诗:_________;_________。诗有古诗和现代诗,建筑也有古今之分,泾渭分明。在缓缓流逝的时间长河中,总有一些记忆像卵石般沉淀下来,_________,_________。爱,特别是母爱,对他来说,就是这样一份沉甸甸的卵石。①或神
下列关于代理服务器功能的描述中,(64)是正确的。
(1)Itiseasytoforgetthateventhemosttrivialcommercialtransactionsrelyonsmallactsoftrust.Lawsencouragegoodbeh
CanthePCIndustryResurrectItself?[A]InternetDataCenter’s(IDC)recentreportstatedthatPCshipmentsdeclined13.9%lastq
最新回复
(
0
)