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Learn... Measuring instruments
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To measure a magnitude, a suitable measuring instrument is required. These instruments can be: Analogue. The measurement is obtained using a scale made of a series of divisions marked with small marks.…
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Analyse. The history of weighing scales
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The history of weighing scales Scales, or balances, have been used since ancient times to weigh goods for trade. The design of weighing scales has changed over the years. Each new design tried, firstly,…
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Final self-evaluation 5 - Matter: Mass, Volume and Density
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Complete the sentences with the missing words: The of objects is measured with weighing scales. The SI unit of measurement for length is the . The square metre is the unit used for expressing surface .…
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Reflect. Amphibians and water 2.1
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Frogs begin life living in the water and spend their adult life out of the water. How can they breathe in and out of the water?
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From Australopithecus to Homo Sapiens Sapiens
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There are two groups within the Hominid family: Australopithecus and Homo. The oldest Australopithecus was found in Kenya and is believed to be four million years old. The cranium was very small (about…
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Answer. Vertebrates (3)
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Why do fish and amphibians produce many more eggs than reptiles?
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Final self-evaluation 11.01 - The Animal Kingdom (II). Vertebrates
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Complete the text with the missing words: gills – swim – gills – gill slits – bone – oxygen – depths – closes Fish breathe through . Water enters the mouth and passes through the , which…
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Answer. Lanscapes of the Earth's climate zones 01
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Why is the vegetation so lush in equatorial climate zones?
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Reflect. European Common Market
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What are the advantages of developing a common European market?
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Final self-evaluation 01 - The European Union
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Complete the following text with the missing words: In , the European Union Act introduced the principle of economic and social to promote balanced of the EEC's member states. As a result, the of…
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