Syllabus Cambridge O Level Computer Studies Syllabus code 7010 For examination in June and November 2011 www.XtremePapers.net Note for Exams Officers: Before making Final Entries‚ please check availability of the codes for the components and options in the E3 booklet (titled “Procedures for the Submission of Entries”) relevant to the exam session. Please note that component and option codes are subject to change. www.XtremePapers.net Contents Cambridge O Level Computer Studies
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yield to provide food for all. For this purpose the use of chemical fertilizers and pesticides has been very high. Though satisfactory crop yield is obtained by the application of chemical fertilizers and pesticides‚ their use brings out certain disadvantages. These include pollution of large water resources‚ destruction of microorganisms‚ acidity of the soil and reduction in soil fertility etc. In recent years scientists have found an alternative way to deal with this deleterious effect of chemical
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planting materials‚ compensate land shortages and genetic improvement of the plant. [pic][pic][pic][pic]A few of the advantages perceived in the use of biotechnology in agriculture are rapid multiplication of plant species‚ breeding of resistant varieties‚ diagnosis and control of disease in crop and livestock‚ utilization of crop residues and animal waste. Some of the disadvantages are high cost of research and development‚ endangering biodiversity‚ genetic erosion and lack of access for poor farmers
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successful because it provides a lot of entertainment that humans need. For example‚ today many people are watching or downloading free entertainment on the internet‚ and many people are playing on-line games. In contrary‚ the internet has a lot of disadvantages. There have been many people who became victims of pornographic sites on the internet.When your computer connects to the internet it is often the case that a virus attacks your computer hard disk. In addition‚ many people steal personal information
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INTRODUCTION 21st Century is a period of time when the globalization process has reached its apogee. All over the world exists thousands diverse international political and economic organizations and unions. According to Garret (2000‚ pp. 941-991) the most important cause of globalization is related to the international market integration. The major impact on this process has had the appearance of the European Union by Maastricht Treaty in 1993. Peace‚ prosperity‚ stability‚ economic and social
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Money saving advantage investigation (CBA) is an apparatus utilized by administrative chiefs to recognize the expenses and advantages‚ in monetary terms‚ of a control to society all in all. People setting up a CBA endeavor to appoint a money related esteem (likewise know as adapting) to all the anticipated expenses and advantages of a control. These incorporate the immediate expenses and advantages‚ as well as any unrelated impacts a direction may force on society. In assessing the consequences for
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from mains power or a cigarette lighter socket in a car using an adapter often called battery charger or wall wart and from a solar panel or a dynamo that can also use a USB port to plug the phone. In addition to the battery‚ GSM handphones require a small microchip‚ called a Subscriber Identity Module or SIM Card‚ to function. Each SIM Card is activated by use of a unique numerical identifier; once activated‚ the identifier is locked down and the card is permanently locked in to the activating network
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melting point; for annealing 800 degrees are needed. Iron‚ by comparison‚ has a melting point of 1538 degrees Celsius. Its low melting point makes copper easy to smelt‚ cast‚ and remelt without special furnaces or a heavy investment of fuel. Another advantage of copper is that it can be recycled without any loss of quality. As pure copper is too soft for structural elements or most practical appliances‚ it needs to be hardened and strengthened. It is therefore combined with
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Trading has been a skill known to humans since the ancient times dated back to 9000 BC. As the years pass by‚ our trading skills have evolved to benefit us financially and continue to differentiate every day through the advancement of technology and common knowledge. Now we are living in a world where everything revolves around using money as currencies‚ but the trade doesn’t stop here. Our society is slowly accepting Cryptocurrency and using them as a way to trade items instead of using their old
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isolated bacteria were named initially as Bacillus bifidus communis‚ which was later renamed to the genus Bifidobacterium. He observed that Bifidobacteria is the dominant in the gut microflora of breast fed infants and also he observed the clinical advantages in using Bifidobacteria in treating infant diarrhoea. Alfred Nissle‚ German professor‚ during an outbreak of shigellosis in 1917‚ isolated a strain of Escherichia coli from faeces of a soldier who was not infected by the disease‚ antibiotics were
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