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Els diccionaris
EduBook Organización
- 1880 visitas
Lèxic 1. Estructura dels diccionaris Hi ha molts tipus de diccionaris, però aquí presentem com s'estructuren els diccionaris generals de la llengua, que són els més usats per a saber el…
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Changes of state
EduBook Organización
- 1877 visitas
2.1. Changes of state of water Water is the best known example of a substance that occurs in the three states. Changes of state are caused by the action of heating or cooling (or changes in pressure).…
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Chemical elements in the Universe and the Earth
EduBook Organización
- 1877 visitas
Chemical elements are found in different amounts in the Universe and on Earth. Hydrogen makes up 90% of all the matter in the Universe. The rest of the elements make up the remaining 10%. On Earth, the…
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Answer. Volume 4.2
EduBook Organización
- 1886 visitas
What are the International System of units for measuring volume?
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Answer. The air and its components 6
EduBook Organización
- 1893 visitas
What does the ozone layer do?
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Choose. Pollutants
EduBook Organización
- 1884 visitas
Are the following substances primary or secondary pollutants? hydrocarbons carbonic acid nitric acid carbon monoxide sulphuric acid nitrogen oxides toxic metal particles
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Choose. Atmospheric phenomena
EduBook Organización
- 1885 visitas
Match each phenomenon with its description: Movement of air from one place to another because of differences in the pressure between the two places. Water droplets and ice crystals that fall from clouds…
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True/false. The atmosphere
EduBook Organización
- 1879 visitas
Are the following sentences true or false? The Earth has always had the same atmosphere. The most abundant components of the atmosphere are carbon dioxide and water vapour. Everywhere in the…
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Complete. Water treatment
EduBook Organización
- 1883 visitas
Match each the name of each place with the correct number: treated water – waste water – water collection – reservoir – industry – sea – sewage treatment plant water purification plant –…
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Reflect. Characteristics of rocks 5.1
EduBook Organización
- 1895 visitas
What causes the transformation of metamorphic rocks?
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