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Answer. Renewable energy sources
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Remember what you have studied in this section and answer the questions: Why is renewable energy known as "clean energy"? How do we produce electrical energy from the Sun? How does a wind…
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Self evaluation 4 - Our planet Earth
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Choose the correct answer: Where is the Sun located in the Solar System? What colour is the Earth when seen from space? How many time zones is the Earth divided into? When does spring and autumn begin…
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Answer. Pregnancy and birth
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Remember what you have studied in this section and answer the questions: How do sperm move? When and where does fertilisation occur? What is the function of the umbilical cord? After how many months of…
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Check. The new industrial society
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Remember what you have studied in this section and answer the questions: What is a class society? Which class does each profession belong to: factory owner, lawyer, shopkeeper, day labourer, civil…
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Continental climate and vegetation
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Continental climate The continental climate is characteristic of the Meseta, the Ebro valley and inland areas of Andalusia and Catalonia. These areas are located in the interior of the landmass. The sea…
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Answer. Reproduction in flowering plants
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Remember what you have studied in this section and answer the questions: How do most plants reproduce? What are the main parts of a flower? What do the pollen grains contain? What happens to the ovule…
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Think. The exploitation of the Amazon rainforest
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Reflect on the deforestation suffered by the Amazon rainforest and answer the questions: What environmetal problems can the disappearance of the Amazon rainforest cause? Does the exploitation of the…
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Ecology lab: Human population dynamics
Tiching explorer Organización
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In this unit we can discover how demographers approach questions through the study of human population dynamics: factors that influence human population growth, how does population growth or decline…
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Choose. Time Zones
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Choose the correct answer: How many time zones is the Earth divided into? What time is it in Istanbul when it is 8 am in the Balearic Islands? Which cities share the same time? Where in Spain does the…
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Talk about it. The natural environment
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Look at the picture and answer the questions. Look at the large photo. What sort of ecosystem does it show? Are the animals that live there herbivores or carnivores? Can they find food easily? What…
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