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
Man and Nature The balance of nature is a delicate system of checks and counter - checks. Nature has its own way of checking
Man and Nature The balance of nature is a delicate system of checks and counter - checks. Nature has its own way of checking
admin
2012-12-13
64
问题
Man and Nature
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 self - 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 looss 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.
The balance of nature is to be maintained so as to prevent ______
选项
答案
soil deterioration
解析
由第四段第一句可知答案。
转载请注明原文地址:https://kaotiyun.com/show/Ugw7777K
0
大学英语四级
相关试题推荐
Hismindwasso______bythediseasethathecouldnotrememberwhathehaddone.
Theincreaseinstudentnumbers______manyproblemsfortheuniversities.
Thosewewantshouldbediligent,vigorousand__theyshouldhavethesenseofcommunityandcooperation.
Wefindthatbrightchildrenarerarelyheldbackbymixed-abilityteaching.Onthecontrary,boththeirknowledgeandexperienc
Wefindthatbrightchildrenarerarelyheldbackbymixed-abilityteaching.Onthecontrary,boththeirknowledgeandexperienc
A、Aswimmingsuit.B、Shorts.C、Nothing.D、Bathrobe.C细节题。当朋友问洗澡时穿什么时,Phil说Ohno!Youdon’twearanything.所以正确答案是nothing。不能根据平时经验主
A、February.B、May.C、July.D、August.B细节题。文章明确提到Mayistheleastcriminalmonthofall,表明五月是犯罪率最低的月份,也就是说五月最安全。故选项B正确。
A、Worried.B、Cheerful.C、Confident.D、Angry.A根据女士提到的anightmare(一场噩梦]以及couldn’tfigureouttheanswer(想不出答案)可推断出,女士很担心她的期末考试,故答
A、Thewomanhasexaggeratedthesituation.B、Thewomanshouldprotestagainstheavyassignment.C、Thehistoryteacherreallygiv
A、Onaplane.B、Atapostoffice.C、Atahotelreception.D、Atatravelagency.D场景推断题。女士问男士有什么可以帮忙的,男士说自己将要去悉尼度假,由于这是他第一次出国旅行,因
随机试题
数据加密是指要把保护的数据进行编码后形成______________。
A.急性粟粒性肺结核B.急性空洞型肺结核C.局灶型肺结核D.千酪性肺炎(2009年)属于非活动性肺结核的是
位于某镇工业区中的日化厂,受托为甲市一家化妆品公司加工化妆品一批,委托方提供的原材料不含税金额66万元,加工结束向委托方开具专用发票收取加工费和辅助材料费的含税金额共计35.1万元;该日化工厂无同类化妆品市场价格。化妆品公司收回化妆品后以150万元的价值出
成语“爱屋及乌”的含义是“爱人者,兼屋上之乌”,它体现了()
根据《中华人民共和国出境入境管理办法》规定,旅游团队出境前已经确定分团入境的,组团社应当事先向()备案。
某乡一所初中进行危房改造,乡政府公开向学生家长集资。由于进度缓慢,乡政府便向学校下了一道命令,凡是缴了集资的家庭,其子女可以在学校正常上课,否则要让学生停课回家催家长缴款。结果,该校50多人的教学班只剩下10多名学生,教师无法正常上课,只好停课一周。
分析下面的谱例。要求:判断调式调性。
图像文件的类型有多种,下列哪一种图像文件可以具有动画效果?()
通用异步收发器(UART)由【61】器、接收器、控制单元以及【62】发生器等构成。
下列与表中字段相关的属性中,通过设置可以提高查询速度的属性是
最新回复
(
0
)