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Viruses are living things
EduBook Organización
1937 visitas
Viruses are very tiny living things. They are smaller than cells. All viruses are parasites. When they meet a cell, they enter it and produce more viruses, killing the cell. They can cause many…
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True / False. Nutrients
EduBook Organización
1932 visitas
Are these sentences true or false? We obtain important substances from food called nutrients. There are three types of nutrients: carbohydrates, proteins and fats. Fats give us less energy than…
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Protists
EduBook Organización
1913 visitas
The Protista kingdom is made up of unicellular and multicellular organisms such as protozoa and algae. 5.1. Protozoa Protozoa are unicellular organisms that live in aquatic or humid mediums. They can be…
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Look and answer. Sex cells
EduBook Organización
1900 visitas
In diagram 1, an ovum and a sperm are represented on the same scale. In diagram 2, the sperm has been magnified. How many times bigger is the ovum than the sperm in diagram 1? How big would the ova be…
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Classify. Democratic and non-democratic
EduBook Organización
1899 visitas
Choose whether these concepts and sentences reflect a democratic or non-democratic attitude: Freedom of thought. The poor cannot vote. More than one political party. The rich can vote twice. Equality.…
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Reflect. Spanish migrations
EduBook Organización
1904 visitas
Reflect on the following questions and justify your answers: Do you think that Spanish internal migrants improved their standard of living after they emigrated? What problems do you think that Spanish…
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Analyse. Calorie intakes in the world
EduBook Organización
1894 visitas
An adult with a reasonably active lifestyle needs, on average, 2400 calories a day to stay healthy. More than 850 million people in the world do not have enough to eat. Where are the countries with the…
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Complete. The rural population
EduBook Organización
1854 visitas
Complete this text with the correct words: In Spain,% of the population is . This means that they live in municipalities of than 10 000 inhabitants. When the rural population is , they live in houses,…
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Discussion (I)
EduBook Organización
1889 visitas
Work with a partner. Explain what the following extracts from Part Three mean. (Friar Laurence) ‘What? I see that young men’s love is not in their hearts but in their eyes!’ (Mercutio) ‘He is…
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Entry test 03 - Weather and climate
EduBook Organización
1820 visitas
Do the following situations cause temperatures to rise or fall?: High altitude in relation to sea level. Proximity to the sea. Proximity to the equator. Somewhere that is less than a 100 metres above…
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