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The transport of substances in plants
EduBook Organización
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2.1. Plant transport systems Plants have two transport systems, one for each type of sap that is transported: Xylem. This system transports raw sap (water and mineral salts) from the root up the stem to…
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Complete. The end of absolutism
EduBook Organización
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Complete the sentences about the English revolution: There was a new dynasty in 17th century England called the , who tried to rule without Parliament. The man who pushed political change in 17th…
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Big Meal Scene 2
British Council Organización
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In this activity we listen and watch the short story of a boy who wants to prepare a birthday surprise for his sister. Before watching the video, we can answer some questions as a preparation task. Once…
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Reading
EduBook Organización
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After dinner that evening Mrs Medlock calls Mary. ‘Your uncle is going away tomorrow and he wants to see you,’ she says. Mary is a little afraid. ‘Mr Craven isn’t going to like me,’ she…
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The removal of cell waste
EduBook Organización
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4.1. What does excretion consist of? Cell activity produces waste products like carbon dioxide or urea. These substances are toxic for the organism if they accumulate. The function of excretion is…
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Check. Materials that conduct and insulate heat
EduBook Organización
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Remember what you have studied in this section and answer the questions: What are the three ways by which heat is propagated? Give one example of each. Does matter move in convection? And in radiation?…
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Let's learn how to... - Forms of communication
EduBook Organización
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Write and publish a magazine What do we need? Paper A computer A photocopier A camera Glue Coloured pens and pencils What do we do? You and your classmates are going to publish a magazine. You can write…
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Science and technology in today's world
EduBook Organización
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Important advances During the 20th century and the beginning of the 21st century, people made great advances in many areas of science and technology. These advances have improved the quality of life for…
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Reproduction in flowering plants
EduBook Organización
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Some plant species reproduce asexually, but most plants reproduce sexually. A pollen grain fertilises the egg cell inside the ovule. The sexual organs of spermatophytes (flowering plants) are in the…
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Complete. Changes in temperature
EduBook Organización
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Complete the text explaining the factors that modify temperature: The factor with the most influence over temperature is , which is the amount of that comes from the Sun's rays. As these rays do not…
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