wall across a busy road into town, they drastically alter the natural flow of water heading downstream. Now I am going to talk about advantages and disadvantages of science and technology. Band 9 essay sample. Today man have progressed through science and technology and made his life secure and comfortable. Nuclear Weapons Threat, it has potential nuclear proliferation issues. This electricity is then carried to homes, businesses and other locations by power lines coming from the dam. Fish populations also suffer at dams because many fish migrate through rivers and streams. Ielts essay: Should children attend nursery schools prior to their primary studies? Water Generates Electricity, so, how exactly is electricity generated from water?
Some reactors produce plutonium which can be used to make nuclear weapons. The resource 'renews' itself as it is used, and unlike things such as minerals and metals, does not occur on Earth in a limited supply. The water flowing over the falls is travelling faster than the water approaching the falls. Current estimates put the uranium supply as enough to last for 30 to 60 years. Introduction, nuclear energy represents only 15 of the electricity produced worldwide. Whereas, oil reserves and other fossil type fuels are likely to run out shortly.
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