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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The creation of an identical copy of something is the process of cloning. It is simply a form of asexual reproduction. Cloning is a big issue in todays world of science because of the potential benefits‚ the risks involved‚ and medical‚ ethical and religious conflicts. Plants and animals have already been cloned and stem cell research is already going ahead‚ and maybe one day science will be able to clone a human. The division of opinion on cloning will require many forums of discussion to cover
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Natural resources are the building blocks on which modern society depends. Knowledge of their physical nature and origins‚ and the web they weave between all aspects of human society and the physical earth can lay the foundation for a sustainable society. We agree with the above statement because natural resources are important‚ as human beings would not exist without them. We use natural resources in everything we do. Therefore we should use our resources with minimal wastage and even ensure
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City is expected to be a best place where everyone can reach such better living conditions. Many people have been moving from their hometown in the countryside to start finding a chance in a big city. One of its advantages is that the city gives out many good conditions and environment for education‚ especially for youth. Moreover‚ there are great numbers of employment offered widely to everybody. However‚ pollution in big cities is such a big concern for many people. People can receive a good
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worldwide. It is allowing access to technology in developing countries. It promotes world peace. It has benefited women and children’s rights. It raises life expectancy. Advantages of Globalization Globalization has several advantages on the economic‚ cultural‚ technological‚ social and some other fronts Advantages of Globalization Goods and people are transported with more easiness and speed the possibility of war between the developed countries decreases free trade between countries
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Handphone also known as mobile phone or cell phone or smart phone‚ and is an electronic device used for mobile telecommunications (mobile telephony‚ text messaging or data transmission) over a cellular network of specialized base stations known as cell sites. Martin Cooper invented the handphone. He is a Motorola researcher and executive. Martin made the first call on a handheld mobile phone on April 3‚ 1973. Cells for handphone base stations were invented in 1947 by Bell Labs engineers. Handphones
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electricity‚ nuclear energy also plays an important role in providing clean energy for global sustainable development. The world has seen the successful international development and expansion of nuclear technology for energy‚ agriculture‚ medicine‚ food preservation‚
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Why we advertise our products If we want our products to be well-known we should advertise them. Advertisements play an important role in the modern economy. They are useful to both consumers and producers. They help the consumers by giving them information about various products available on the market. Many readers appreciate advertising because it lets the vendor speak directly to the consumer about the product. Where we can see advertisements We find advertisements everywhere. Most of the
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move away work from their private lives because when they finish their job and get home‚ most of the times‚ they continue working‚ they never disconnect! In conclusion‚ I would say that we have to learn how to manage computers‚ we have to take advantage of the facilities that they provide us‚ avoiding becoming their slaves‚ which means being able to live without them‚ not being dependents.
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What is telehealth ? telehealth is a collection of means or methods for enhancing health care‚ public health and health education delivery and support using telecommunications technologies . It also ecompasses a broad variety of technologies and tactics to deliver virtual medical ‚ health ‚ and education services. While on the other hand telemedicine is the remote diagnosis and treatment of patients by means of telecommunications technology. Telehealth uses computer assisted telecommunications
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