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Check. Materials that conduct and insulate heat
EduBook Organización
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Remember what you have studied in this section and answer the questions: What are the three ways by which heat is propagated? Give one example of each. Does matter move in convection? And in radiation?…
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Complete. Democratic republic
EduBook Organización
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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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Complete. Changes in temperature
EduBook Organización
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Complete the text explaining the factors that modify temperature: The factor with the most influence over temperature is , which is the amount of that comes from the Sun's rays. As these rays do not…
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Look at this historical document showing some peasants in the Middle Ag...
EduBook Organización
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Look at this historical document showing some peasants in the Middle Ages and answer the questions: What type of historical document is it? What does it show? What clothes are the peasants wearing? What…
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Life in the countryside in Roman times
EduBook Organización
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Roman villas Roman villas were large farms with a luxurious house and garden for the owners. The workers lived in ordinary houses around the villa. Villas often had rooms with mosaic floors. They also…
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The removal of cell waste
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4.1. What does excretion consist of? Cell activity produces waste products like carbon dioxide or urea. These substances are toxic for the organism if they accumulate. The function of excretion is…
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Neurons and nervous actions
EduBook Organización
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Neurons The nervous system consists of special cells called neurons (or nerve cells). Each neuron has many short nerve extensions, called dendrites. One of the extensions is longer than the others. This…