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Answer. Non-renewable energy sources
EduBook Organización
- 1489 visitas
Remember what you have studied in this section and answer the questions: What will happen if we use too much of the Earth’s non-renewable sources of energy? What materials can we make with oil? What…
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Analyse. A text
EduBook Organización
- 1448 visitas
Energy and sustainable development The way of life in developed countries requires huge quantities of energy. If non-renewable sources of energy continue to be used up at the current rate, they will be…
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The Socialist programme
EduBook Organización
- 1446 visitas
The general crisis, in addition to our deficient economic structure, which is a legacy of the past, means that today we face four fundamental problems: unemployment (…), inflation (…), a balance of…
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The depletion of the ozone layer
EduBook Organización
- 1439 visitas
In the 80s, a decrease in the thickness of the ozone layer over Antarctica was detected. This rate of decrease has continued. Scientists believe that the original concentrations of ozone will be…
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English Bites / Weather Man
Xtec Organización
- 1420 visitas
Meet someone whose job is to predict what the weather will be like. Farmers in Southern Australia who've just endured the worst drought in a hundred years and are now being buffeted by regular,…
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Work on gravity
EduBook Organización
- 1413 visitas
Here is a link to a simulation which will enable you to work on the forces of attraction between masses: www.tiching.com/100615 Use this simulation and explain the differences observed in the magnitudes…
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Observe. Spain's population
EduBook Organización
- 1413 visitas
Look at the photos and answer the questions: What do the photos show you about Spain's population today? Which factors cause a population to increase? What makes it decrease? In this unit, we will…
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Listening - The text and beyond
EduBook Organización
- 1468 visitas
You will hear a conversation between two students. Listen and decide if the following sentences are true or false. Sally thinks that Hyde escaped. John thinks that Dr Jekyll killed Hyde. Sally thinks…
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CERN. Educational / The time machine : the LHC adventure is a journey through time ....
Xtec Organización
- 1352 visitas
Archaeological findings at one LHC site take us back some 1700 years. Civil engineers dug through rock that dates from about 208 to 144 million years, and the LHC's collisions will complete the…
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Calculate. Minerals (2)
EduBook Organización
- 1374 visitas
Manganese is a mineral formed at the bottom of the sea. It is found in the form of different sized nodules. If we know that each nodule grows by 2 mm every million years, how long will it take a nodule…