根据文章第一段第二句话“Nature provides a population to occupy a suitable environment and cuts down surplus population to fit the available food supply.大自然为适当的环境提供一定的物种数量,同时又为适应相应的食物供给而减少多余的物种数量”。B正好与这一有关“balance of nature”的解释相吻合,故为...
A. became problems themselvesB.atethe sugar crop C.attacked humansD.hadnothing to eat 4. It is implied in this passage that . A. sugar planter imported mongooses tocontrol rats B.man should never kill animals C.man has complete control over nature D.to upset the balance of nature can ...
Williams, C. B.: Patterns in the Balance of Nature and related Problems in Quantitative Ecology. With 126 fig. - London and New York: Academic Press 1964. 324 pp. Theoretical and Experimental Biology Vol. 3. 60 sNo abstract is available for this article.doi:10.1002/iroh.19650500209...
Nature provides a population to occupy a suitable environment and cuts down surplus population to fit the available food supply. One means of reducing surplus population is predators; others are parasitic diseases. Also population density produces nervous disorders and even drives animals to mass migrat...
The “ balance of nature ” is not an empty phrase. Nature provides a population to occupy a suitable environment and cuts down surplus population to fit the available food supply. One means of reducing surplus population is predators; others are parasitic diseases. Also population density produces...
became problems themselvesB.ate the sugar cropC.attacked humansD.had nothing to eat4. It is implied in this passage thatA. sugar planter imported mongooses to control ratsB.man should never kill animalsC.man has complete control over natureD.to upset the balance of nature can be troublesome...
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 ...
aKeeping a balance of nature is improtant.That predator populations mount to control other animals has long been know.Smetmies a situation occurs in which the predator population is reducedto a level below that which nature can readily replace.Then nature resocrted to disease to cut doen these...
1. The fact that the number of predators has much to do with that of other animals. A. is not recent knowledgeB.has just been learned C.hasn’t been proved yetD.is not important now 2. When predator control fails, nature brings animal population into balance by. ...
阻抗匹配平衡变压器单相负荷平衡补偿的研究与分析计算 the study,analysis and calculations of balance compensation for the impedance matching balance transformer when carrying single phase load 热度: 大自然与生态平衡(Balanceofnatureandecology) Balanceofnatureandecology ...