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The Grand Canyon

          Attention GetterHow many of you have heard of the Grand Canyon?How many of you have gone to the Grand Canyon?Goal StatementToday I want you...
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scientific work: Black Holes

          Black holes are areas in the universe where gravity pulls in everything, even light. Nothing can get out and all objects are squeezed into...
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scientific work: Organic Farming and Food

          In organic farming, crops, meat and other food are produced without chemicals. Fertilizers, pesticides, growth hormones and antibiotics are forbidden. During thousands of years of...
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Research article: Air Pollution

        Air pollution is caused by many things: — the increasing number of cars on our roads; — growing cities; — the fast development of our economy; — industrialisation.   Air...