Recursos educativos water página 77

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We use energy
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Electricity We use electricity every day in homes, offices, schools and factories. We get electricity from: Hydroelectric power stations, which convert water energy into electricity. Thermal power…
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End-of-unit activities - The nervous system
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Right now, you are reading these words and you understand them. If you see food when you are hungry, your mouth starts to water. If you burn your hand, you move it away immediately. You automatically do…
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Initial self-evaluation T4 03 - Rivers and seas
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Are the following statements true or false?: Flow is the amount of water that a river carries. A river meanders in its upper course. A river causes more erosion in its lower course. The materials…
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Final self-evaluation 9.02 - The Plant Kingdom
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Complete the text with the missing words: stem – multicellular – Photosynthesis – mineral – ground – water – autotrophic – sap – roots – vessels Plants are and organisms that rooted to…
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True / false. External geological forces
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Are these sentences true or false? The main external geological forces are wind, fire and snow. There are five phases of external geological action. The erosion of the Earth's surface occurs in this…
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Complete. Fish
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Complete the sentences with the missing words: Fish breathe through . Fish reproduce through external fertilisation ( fish) or internal fertilisation (viviparous fish). The protects the gills of bony…
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8. Self-evaluation - The representation of the Earth: maps
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Complete the following sentences about topographic maps: They are general maps that include detalied information about the and man-made aspects of a certain geographical area. is represented by contour…
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The leaves make the food
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The roots absorb water and minerals from the soil. This becomes raw sap. The raw sap moves up the stem to the leaves. The leaves use raw sap, sunlight and a gas called carbon dioxide to make food. The…
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Think about it. Abiotic factors
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Remember what you have studied in this section and answer the questions: Why do you think life developed in water before it developed on land? Light is very important for which organisms? How does light…
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Balanced diet
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In this lesson we learn what types of food provide the essential vitamins and minerals needed for a body to function well as well as the quantities of carbohydrate, protein, fat, fibre and water that…
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