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Answer true or false
EduBook Organización
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Answer true or false: The relief is the shape of the land. → A tunnel is a natural feature of the landscape. → The peak, slopes and foot are parts of a mountain. → Many people who live on…
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Summaries - Human reproduction
EduBook Organización
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1. Human reproduction and sexual differences Sexual reproduction is the type of reproduction that happens through the union of two different individuals, one male and one female. Human reproduction is…
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Check. Waves
EduBook Organización
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Remember what you have studied in this section and answer the questions: What is a wave? → A wave is a... that... Do waves transport energy? And matter? How can you show which of these waves…
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Self-evaluation 2 - Weather and climate
EduBook Organización
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Which concepts do the following definitions refer to?: It is the degree of warmth in the air due to solar radiation. It is a gaseous layer more than 1 000 kilometres thick that surrounds the Earth. It…
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Answer. Human reproduction
EduBook Organización
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Remember what you have studied in this section and answer: What is a zygote? How is it formed? What is fertilisation? What route do sperm follow from when they leave the testicles to the moment they…
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The Universe
EduBook Organización
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The Universe is made up of all the celestial bodies and all the enormous space around the celestial bodies. The most important celestial bodies are the stars. Stars Stars are gigantic balls of very hot…
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Rock types
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Sedimentary rocks Common salt is made when sea water evaporates. It is extracted from salt mines. Sandstone is a sedimentary rock made up of grains of sand that are held together by other mineral…
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Conjunctions - Understanding the text
EduBook Organización
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“I’M NOT DEAD, BUT MY LEG HURTS A LOT,” SAYS ANNE. In this sentence but is a conjunction. Conjunctions join different ideas in sentence. Complete each of the following sentences with one of the…
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Initial evaluation 2 - The Hydrosphere
EduBook Organización
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Complete the text with the missing words: Seawater is mainly made up of water and chloride. The water in rivers contains substances compared with the water in seas and oceans. At the poles and in…
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Answer. Characteristics of the continents
EduBook Organización
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Write the name of the continent to which the following characteristics refer: It is a large peninsular extension of Asia: . The temperatures are extreme and human life is almost impossible: . It crosses…