Recursos educativos página 12001

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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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Calculate. The transpiration of a tree
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A tree has 150000 leaves, due to transpiration eeach leaf loses 1 mL of water an hour in one day during a hot summer. ¿How many litres of water are lost in one day with 13 hours of light?
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Analyse. Learn how a mountain range is formed
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As you already know, the Himalayas were formed when the Indian Plate collided with the Eurasian Plate. The oceanic lithosphere subducted under Eurasia and the oceanic sediments, which were very light,…
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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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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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Check. Light, shadow and penumbra
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Remember what you have studied in this section and answer the questions: Name two effects that show that light travels in a straight line. Can you demonstrate it now? With a classmate, describe the…
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Enlightenment principles
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Natural or moral equality is based on the constitution of human nature common to all men, who are born, grow, live and die in the same way. The first state that man acquires in nature, and that is…
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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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