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 counterchecks. Nature has its own way of checking th
Man and Nature The balance of nature is a delicate system of checks and counterchecks. Nature has its own way of checking th
admin
2013-06-17
37
问题
Man and Nature
The balance of nature is a delicate system of checks and counterchecks. 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 utilize 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 balanced 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.
选项
A、Y
B、N
C、NG
答案
B
解析
第—段最后一句中“Nature’s ways of maintaining the balance are intricate and not easily understood”表明保持生态平衡的方法不是简单和容易理解的。
转载请注明原文地址:https://jikaoti.com/ti/z71FFFFM
0
大学英语四级
相关试题推荐
Thereisnodenyingthatstudentsshouldlearnsomethingabouthowcomputerswork,justasweexpectthematleasttounderstand
Lastyear’seconomyintheUnitedStatesshouldhavewontheOscarforbestpicture.Growthingrossdomesticproductwas4.1pe
Onelunchtime,MayWardwasgoingroundthelocalsupermarketinParksideRoad,Liverpool,doinghershopping,whenshesuddenly
Overahundredyearsago,CharlesDickensshockedmanyofhisreaderswhenhedescribedtheconditionsunderwhichyoungchildre
IngredientsforHappinessNo,happinessisn’talotteryticketaway.Iamfascinatedbyacademicstudiesofhumanhappin
NewHope,OldFearsBonnieKrull,54,hadalreadyhadenoughbreast-canerscaresforonelifetime,withafewtospareforr
Duringsleep,thefatigueofthebodydisappearsandrecuperation(恢复)begins.Thetiredmindgathersnewenergy.Onceawake,th
A、Theywanttopleasewomen.B、Theywanttotellthetruth.C、Theythinkwomenareasgoodasmen.D、Theythinkwomenareasstr
Ihavebeenstudyingthenatureofthe"loweranimals"andcontrastingitwiththatofman.Ifindtheresulthumiliating(使丢脸)to
A、Designingbetterears.B、Buildingmorehighways.C、Increasingpeople’sawarenessoftrafficproblems.D、Enhancingdrivers’sen
随机试题
如何实施“以质取胜”战略?
A、afternoonB、classroomC、roommateD、bootBoo在B项中读[u],而在A、C、D三项中读[u:]。
患者小便浑浊,乳白或如米泔水,上有浮油,置之沉淀,或伴有絮状凝块物,或混有血液、血块,尿道热涩疼痛,尿时阻塞不畅,口干,苔黄腻,舌质红,脉濡数。治宜选用
彩色多普勒血流显像仪的工作流程不包括下列哪项内容
男性,43岁,面部疖肿挤压后寒战高热,局部肿胀明显,全身皮肤散在瘀血点,血白细胞18×109/L,中性0.90。若处理不当可引起
下列关于糖原染色法的应用不正确的是
我国对涉及人类健康和安全,动植物生命和健康以及环境保护和公共安全的产品实行强制性认证制度,认证标志是______,其名称是______。()
按照国家有关规定,纳税人委托个体经营者加工应税消费品,一律( )消费税。
马克思通过对资本主义生产中价值增值过程的分析,把雇佣工人的劳动时间分为()。
(东华大学2017)马歇尔一勒纳条件指当一国的出口需求弹性与进口需求弹性之和()时,该国货币贬值才有利于改善贸易收支。
最新回复
(
0
)