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Alocución del Rey el 23-F
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Ante la situación creada por los sucesos desarrollados en el palacio del Congreso y para evitar cualquier posible confusión, confirmo que he ordenado a las autoridades civiles y a la Junta de Jefes de…
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Investiga. Nuevos movimientos sociales
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El nuevo orden internacional no ha sabido acabar con los conflictos y las desigualdades. Se extiende la conciencia de que muchos de los problemas actuales (económicos, sociales, etc.) son de ámbito…
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Sinonímia
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Sinonímia El significat dels mots
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The transport of substances in plants
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2.1. Plant transport systems Plants have two transport systems, one for each type of sap that is transported: Xylem. This system transports raw sap (water and mineral salts) from the root up the stem to…
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Learn. Simple machines - Obtaining and using energy
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Simple machines The most rudimentary machines are called simple machines. They are basic, but they are of great help in performing tasks and transferring energy. The Wheel A wheel is a circular object…
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Check. Test yourself
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Remember what you have studied in this unit and answer the questions: List different forms of energy and give two examples of when each one operates. What type of energy is possessed by a girl who is…
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Choose. Heat and temperature
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Choose the correct answer: What kind of energy is transformed into heat in a wood fire? Why do the handles of cookware tend to be made of plastic? What is a thermometer?
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Effects of heat on bodies (I)
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3.1. Increase in temperature Heat must be added to increase the temperature of a body. This causes the particles that make up the body to increase their speed. For this reason, the increase in…
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Did you know...
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During the French Revolution, citizens were grouped into societies (clubs) according to their political affinities and in order to have some influence in the Assembly. Amongst the most popular clubs…
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Complete. Democratic republic
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Complete the sentences about the Democratic Republic with the missing words: In June 1791, Louis XVI fled Paris to join the Austrian army; this event is known as the Flight of . The radical group known…
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