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Learn. Spontaneous generation - Animal reproduction
EduBook Organización
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In ancient times, many people believed that living things could be created spontaneously from decomposing material. Aristotle stated that flies and mosquitoes were produced spontaneously from mud in…
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Final self-evaluation 7 - The Atmosphere
EduBook Organización
- 2213 visitas
Complete the text with the missing words. Some words can be used more than once: water – high – anticyclones – low – heats – opposite cyclones – cools – cold – lighter – sea –…
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True/False. Temperature
EduBook Organización
- 2189 visitas
Answer true or false: Temperature scales are graduated based on reference points which never change On the Celsius scale 180 degrees represents freezing and evaporating water. You can have different…
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Complete. Rivers of the Iberian Peninsula
EduBook Organización
- 2186 visitas
Complete the sentences with the correct words: short rain sea low water Most rivers in the Iberian Peninsula have flow. In areas where there is a lot of , rivers carry more . In areas where mountains…
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Amphibians
EduBook Organización
- 2187 visitas
2.1. Characteristics of amphibians Amphibians were the first vertebrates to colonise land, even though they still depended on water to reproduce. Amphibians can be divided into two groups: Anurans do…
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Non-renewable sources of energy
EduBook Organización
- 2157 visitas
4.1. Coal Coal is a solid, black rock. It is the fossilised remains of huge masses of vegetation buried under the ground millions of years ago (figure 1). It is used mainly as fuel in coal-fired power…
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Reptiles dominated the Earth
EduBook Organización
- 2150 visitas
200 million years ago, reptiles dominated all of the Earth's land, air and water. Dinosaurs took many forms. They were the biggest land animals that have ever existed. The diplodocus, for example,…
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Self-evaluation 8 - Climates and landscapes of the Earth
EduBook Organización
- 2138 visitas
Which of the following factors determines or does not determine the climate of the Iberian Peninsula: The predominance of irregular coastline. A high average altitude. Being surrounded by water. The…
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Match. Main fishing grounds
EduBook Organización
- 2131 visitas
Identify the world's main fishing grounds: Places like the North Sea, where the water is not deep. Places with coldwater and warmwater fish, such as the coast of Newfoundland. Places with abundant…
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A saturated salt solution
Tiching explorer Organización
- 2274 visitas
In this lesson we learn how water molecules create bonds with salt ions. There is a Whiteboard presentation on solutions and a series of student's activities on saturated solutions. By watching…
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