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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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Final Autoevaluation T10 01 - Obtaining and using energy
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Choose the correct answer: What type of energy is produced when a girl is moving on roller skate? How is this energy transformed when she goes up hill? When a an elastic bow shoots an arrow to the…
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Final self-evaluation T02 07 - Liberal revolutions and nationalist movem...
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Complete the sentences about democracy with the missing words: liberal – collective – sovereignty – suffrage – sovereignty – democrats – democratic – suffrage Around 1848, the prevailing…
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