Recursos educativos an página 427

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Summaries - Matter: Mass, Volume and Density
EduBook Organización
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1. Measurement. Magnitudes and units Matter has two general properties. It has mass and volume. Mass and volume are magnitudes. Everything that can be measured has a magnitude. To measure something is…
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Technology, communication and globalisation
EduBook Organización
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3.1. Technological and economic development Scientific research and its practical applications have been key to an economy's growth in the last few decades. Governments and big companies invest…
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Our distant past
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Aqueduct. In Roman times, aqueducts carried water from the rivers to the cities. Modern Age. The Modern Age started in the 15th century. It was a period of discovery and new inventions. Castles. A…
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Self-evaluation 8 - Society and the environment
EduBook Organización
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Which statements about climate change are true or false: The climatic conditions of an area can change because of human activity. Climatic variations can also be of natural origin. Without greenhouse…
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Events leading up to the First World War
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There were a great many tensions and conflicts between the nations in the years leading up to the First World War. This escalation of hostility is why many historians describe it as 'an inevitable…
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Choose. The German national socialist ideology
EduBook Organización
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Identify whether the sentences refer to German or Italian fascism: Promise to create an empire controlling the Mediterranean. Defence of anti-Semitism, the superiority of the Aryan race and the need to…
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The empire of Charles I
EduBook Organización
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1.1 Heir to an empire Charles I of Spain, who was also Charles V of Germany, was the son of Joanna of Castile (daughter of the Catholic Monarchs) and the German prince Philip of Habsburg. His…
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Sponges, cnidarians and echinoderms
EduBook Organización
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Sponges Sponges are the simplest type of animal that exists. They live in water and are attached to rocks on the seabed. Sponges are often irregular in shape. Their bodies have lots of small holes that…
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Resúmenes - Potencias y radicales
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1. Potencias de exponente natural Si a es un número real y n es un número natural, n > 1, la potencia an de basea y exponenten se define de la siguiente forma: Casos particulares: Si el exponente es…
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Geography and history
EduBook Organización
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Unit 4: The age of discoveries authoritarian monarchy (n): a new type of monarchy at the beginning of the Modern Age in which European monarchs took control of taxes, justice and the army. caravel (n):…
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