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Introducció - Tipus de textos
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Introducció Tipus de textos
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Learn. [...]
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In our country, there is a great variety of ecosystems: mountainous areas with coniferous forests, deciduous forests, riverside woods, rocky or sandy coasts, lakes and even deserts. This diversity is…
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Check. Risks from volcanoes
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Remember what you have studied in this section and answer the questions: Can a volcano be dangerous if it is only emitting gas? Why? How can we avoid damage and the loss of human life during a volcanic…
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Unit 2: Animal nutrition
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Absorption (n): taking in a substance or energy from the surrounding area. aerobic respiration (n): respiration which takes place in the presence of oxygen. anaerobic respiration (n): respiration which…
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Calculate. The speed of light
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The Sun's light takes approximately 8 seconds to reach the Earth. How far is the Sun from the Earth? d = km If the average distance from Pluto to the Sun is 5.9 billion kilometres, how long does it…
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Interpret. Molecules and crystals
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Look at the pictures and answer the questions: In what way is a sulphur molecule different from a water molecule? In a glass of water, what is the proportion of hydrogen atoms to oxygen atoms? Describe…
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Light and colours
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5.1. The composition of white light White light is actually made up of many colours. We can see this if we pass white light through an optical prism (figure 1). 5.2. The colours of objects When white…
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Summaries - Liberal revolutions and nationalist movements (1789-1871)
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1. Liberalism and nationalism Liberalism is both an ideology and a political and economic doctrine based on a set of principles: The citizens posess national sovereignity and choose representatives by…
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Complete. Caciquism
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Complete the sentences about caciquism and bipartisanship with the missing words: The alternation of parties in power was only possible thanks to a electoral system based on the local control of . The…
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The Spanish economy in the late 19th century
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4.1. The agricultural crisis of the late 19th century In the late 19th century, the low price of cereals produced in the Americas caused an agricultural crisis in Europe. The crisis was particularly…
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