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Atoms and molecules
EduBook Organización
- 2428 visitas
3.1. Atoms The smallest units of matter are called atoms. All substances are made up of atoms. Atoms contain three types of particles: protons, neutrons and electrons. Protons and neutrons are located…
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The propagation of heat
EduBook Organización
- 2427 visitas
Heat transfers from a hot object to a cold object by means of three mechanisms: conduction, convection and radiation. 6.1. Conduction Heat is transmitted through solid substances by conduction (figure…
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Biofuels: plant materials to replace oil
EducaMadrid Organización
- 5821 visitas
Facing the growth of CO2 emissions from transport and the difficulty to find alternatives to the traditional fuels for transport, Europe is proposing an immediate answer. It is encouraging the…
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Work it out. The natural environment
EduBook Organización
- 2287 visitas
Remember what you have studied in this section and answer the questions: What environmental conditions prevent the existence of life on the other planets in the Solar System? Why is light a limiting…
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Unit 8: The Earth, a Living Planet
EduBook Organización
- 2150 visitas
Asexual reproduction (n): the process of reproduction of a single organism by itself. autotroph (n): an organism that produces its own food for nutrition. bioelement (n): any of the chemical elements…
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Activities - Part Two
EduBook Organización
- 1941 visitas
Mowgli, Bagheera and Baloo are very sad. The picnic is in the tiger’s tummy! ‘What’s the matter?’ asks Hathi, the elephant. ‘Look at the greedy tiger!’ says Mowgli. ‘My delicious picnic is…
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Final evaluation 1 - The Universe and our Solar System
EduBook Organización
- 1517 visitas
Decide which of the following sentences are false and correct them: Most of the matter in the Universe cannot be seen. The Milky Way is located in the centre of the Solar System. The Bing Bang theory…
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