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Blood circulation (I)
EduBook Organización
- 3071 visitas
The circulatory system The circulatory system has two very important functions: It transports nutrients and oxygen to all the cells in our body. It collects the waste products that the cells produce.…
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Problems with fishing
EduBook Organización
- 2900 visitas
7.1. Too many fishermen, too few fish The most serious problems faced by the fishing industry today are related to overfishing and the lack of fishing grounds due to increased territorial waters.…
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Match. Traditional sources of energy 01
EduBook Organización
- 2366 visitas
Which type of traditional energy source does each statement refer to? Its high calorific value means it is the most widely used form of energy. Today its use is restricted to producing thermal energy.…
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Cell phones
Educastur Organización
- 1 lo usan
- 3551 visitas
In this unit we discuss the topic of whether kids as young as six should have their own cell phones, we watch a funny sketch about the release of the iPhone 3G and finally we reflect on the problem of…
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Final self-evaluation 9 - The Hydrosphere
EduBook Organización
- 2288 visitas
Complete the following sentences with the missing words: Drinking dirty is a major cause of illness. Human beings should only consume water. Three quarters of the Earth's is covered by oceans. Waste…
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Bacteria and humans
EduBook Organización
- 2220 visitas
4.1. Industrial use of bacteria Many bacteria are beneficial because they are used in industrial processes. In the food industry, bacteria are used to make yoghurts and to turn wine into vinegar. They…
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European Fisheries: A stategry for eliminating discards
EducaMadrid Organización
- 4381 visitas
On 28 March, the European Commission published a report outlining its strategy to bring the number of rejected fish or ‘discards’ – which represent a terrible waste of resources – down to…
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Investigate. Kidney stones
EduBook Organización
- 2051 visitas
Sometimes waste products from the blood may solidify in the kidneys. These solid concentrations are called kidney stones. Find out about kidney stones. Why are they produced? What can we do to avoid…
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Did you know?
EduBook Organización
- 1965 visitas
Perspiring is really important. It is a mechanism for regulating our body temperature. When we sweat from the heat or doing exercise, the water that our skin excretes evaporates on contact with the air…
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We are all responsible for the environment
EduBook Organización
- 1890 visitas
Everyone has the right to live in a healthy environment. We should also protect the environment for future generations. We can do this by developing the following habits: Using rechargeable batteries…
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