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La comunicació: definició i elements
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La comunicació: definició i elements La comunicació. Les funcions del llenguatge
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Check. The leaves make the food for the plant
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Remember what you have studied in this section and answer the questions: In which cells do the following functions take place: photosynthesis, gas exchange, transport of nutrients, absorption of light?
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Learn. Spontaneous generation - Animal reproduction
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In ancient times, many people believed that living things could be created spontaneously from decomposing material. Aristotle stated that flies and mosquitoes were produced spontaneously from mud in…
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Analyse. A text
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Polyembryony Polyembryony is a type of sexual reproduction in which an embryo fragments into several identical embryos. They each develop independently. The young of each litter are of the same sex, as…
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True or false. States of matter
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Answer true or false: The particles are less tightly bound together in a solid. The particles in a gas move very quickly. All systems are composed of material particles. Liquids are compressed and…
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Check. Mass and weight
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Remember what you have studied in this section and answer the questions: What is gravity? Where do we see examples of the force of attraction between bodies? Discuss.
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Calculate. Pressure
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Calculate the pressure exerted on snow by the feet of a man with a mass of 81 kg if you know that the total surface area of the soles of his boots is 0,6 m2? Note: g = 9,8 m/s2. P = Pa
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Choose. Upthrust and buoyancy
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Choose the correct answer: What equals the upward thrust experienced by a submerged object in a liquid? What is the apparent weight of an object? What happens if the weight is less than the upward…
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The great colonial empires
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3.1. Dividing up the world The major European powers gained control of almost all of Africa and Asia, most of the islands in the Pacific Ocean and Oceania, and large parts of North America. Africa was…
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Peasant revolts
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We believe that peasants should not seek any other economic goal but the fairest distribution of land and farming equipment. Our hope lies with the Andalusian peasants, who we consider capable of…
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