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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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The carbon cycle
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The carbon present in living things comes from atmospheric carbon dioxide. Plants and algae take in carbon dioxide through photosynthesis. They use it to make the biomolecules which they need to grow.…
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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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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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Final self-evaluation 03 - The Earth's surface: shaping human activity
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Are the following statements true or false? Asia stretches from almost the North Pole to the Antarctic and separates the Atlantic and Pacific oceans. Massifs are relatively recent elements of relief and…
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Answer. The State and political organisation 01
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Apart from its exclusive powers, what other powers and responsibilities does the state have?
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Identify. States of the world
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Match each definition with a group of countries: Countries with active economies and cheap labour. Countries whose natural resources are exploited by others. Countries with very poor populations that…
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