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Recursos educativos
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Nivel educativo
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Did you know...
EduBook Organización
- 1830 visitas
After World War II, the governments of many countries nationalised certain services, including transport, water, electricity and healthcare. These services were created and managed with money from taxes…
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EduBook Organización
- 1783 visitas
One of the most serious problems in civil wars in LEDCs is child soldiers. It is estimated that some 300000 children and teenagers are currently active in military conflicts worldwide.
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EduBook Organización
- 1754 visitas
Shopping centres, or malls, are very common in North America and, to some extent, in Europe. Canada alone has more than 40 "mega shopping centres". Each one occupies more than 70000 m2 and has…
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EduBook Organización
- 1763 visitas
Hydrocarbons, such as petroleum and its derivates, are the simplest type of organic molecules. They are made up of carbon and hydrogen atoms and come from the remains of organisms that died millions of…
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EduBook Organización
- 1713 visitas
The big multinationals control 75 % of world trade. The number of multinational companies has risen from 7 000 in the early 1960s to 85 000 at the beginning of the 21st century. The sales of the…
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EduBook Organización
- 1711 visitas
When we want water, we just turn on the water tap and out it comes. But water is a very scarce resource. We should not waste or pollute water. Remember, more than 2 billion people do not have access to…
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EduBook Organización
- 1702 visitas
Oil comes from the decomposition of the remains of microscopic organisms that lived millions of years ago. Oil is the most important natural material for industrial development. It is used to make…
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EduBook Organización
- 1687 visitas
Low clouds are clusters of tiny drops of water. At high altitudes, water vapour cools and condenses into liquid water.
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EduBook Organización
- 1666 visitas
Louis Pasteur was one of the most prominent scientists in the study of microorganisms. One very important contribution was his discovery of the process of pasteurisation. With pasteurisation, harmful or…
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EduBook Organización
- 1615 visitas
Yeasts are microscopic fungi that reproduce by budding. In this process, a protuberance (or bud) forms, which may separate from or remain attached to the parent organism. Yeasts are of great economic…
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