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The stars
EduBook Organización
1845 visitas
2.1. The nature of starts Stars are spherical bodies that emit light and heat. They are made up of very hot gases. Nuclear reactions take place inside these stars. For this reason, the temperatures of…
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Summaries - Energy inside the Earth
EduBook Organización
4710 visitas
1. Manifestations of the Earth's internal energy The surface of the Earth is cold, but we can see some evidence of the heat inside; for example, hot springs and volcanoes. This heat is due to…
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Summaries - The Earth, a Living Planet
EduBook Organización
3327 visitas
1. The beginning of life The Earth is the only planet in the Solar System that has all the conditions for life to develop. These conditions are its size, its distance from the Sun and the existence of…
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Unit 10: Obtaining and using energy
EduBook Organización
3185 visitas
Acid rain (n): rain which is acidic due to the presence of pollutants. balanced (adj): distributed evenly. biomass (n): organic matter used as a source of energy. blade (n): the arm which makes a wind…
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