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Answer. The Earth, a planet of the Solar System 03
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How long does it take the Earth to rotate once on its axis?
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Choose. The Earth's layers
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Match each characteristic with one of the Earth's layers: It is gaseous. It is made up of living things. It is made up of water. It surrounds the Earth. It is where the weather occurs. It covers…
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Final self-evaluation 10 - The Atmosphere
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Complete the following sentences with the missing words: Carbon dioxide provokes an increase in the greenhouse effect. Acid harms lakes, rivers, forests and buildings. Atmospheric pressure is measured…
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Melting glaciers
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In recent decades glaciers and ice caps, which contain most of the fresh water on the planet, have decreased in size. Why do you think many glaciers have reduced in size? What could happen if all the…
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Answer. Ores
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Find information to explain which metals are extracted from the following ores and what we use these metals for: galena - chalcopyrite - hematite - sphalerite - cassiterite - cinnabarite
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Final evaluation 1 - The Earth's Crust
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What is the difference between the Earth's continental crust and its oceanic crust?
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Answer. The chemical composition of living things 2.3
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Where is most of the oxygen used by living beings to be found?
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Answer. Classification of living things 2.5
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What type of cells are bacteria made up of?
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Final self-evaluation 2 - The Diversity of Life
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Match the beginning of each sentence with the correct ending. All of the Earth's ecosystems and their biodiversity... It is estimated that every year... If the current rate of extinction…
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Nematodes, annelids and molluscs
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2.1. Nematodes Nematodes are thin, round, non-segmented worms. There are a large variety of free-living land nematode species, although they prefer wet environments. Nematodes also include parasitic…
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