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The five groups of vertebrates
EduBook Organización
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Fish have an elongated body and swim using their fins. Amphibians live part of their life in water. Their skin is moist and slippery. Reptiles crawl to move around. Their bodies are covered with hard…
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Blood circulation (II)
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The heart The heart is the organ that pumps blood to all the cells in our body. It is about the size of a closed fist. Its walls are made of muscle tissue. The heart contains four chambers: The two top…
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Answer. Unicellular and multicellular organisms
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Remember what you have studied in this section and answer the questions: What are organisms made up of a single cell called? How do they reproduce? What do we call living things that are made up of many…
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How we breathe in places with no air
EduBook Organización
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We need air to breathe Humans and other animals that live on land need air to live. When we breathe, we take oxygen from the air. With this oxygen and with the food we eat, our body has the energy it…
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Comprehension check (KET)
EduBook Organización
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Read the paragraphs and choose the best word for each space. There is an example at the beginning. The beautiful young woman was called Emilia Lucca. She was Gennaro Lucca's wife. When she saw…
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Before you read 01 - How the Leopard Got His Spots (part one)
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Read the text and complete the information below. Giraffes Giraffes are very tall animals. They are light brown with a lot of dark brown patches on their body. They have long legs and a very long neck.…
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Video: Nuclear radiations in 3Mile Island, Chernobyl and Fukushima
Educatube Organización
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In this 11 minute video (with Spanish subtitles) Helen Caldicott (Nobel Prize) explains the consequences of recent nuclear catastrophes on the human body. We can listen to specific scientific vocabulary…
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Learn. Measure your heart and breathing rates
EduBook Organización
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What do we do? Our circulatory and respiratory systems are constantly adapting to our body's needs. You can test this with the following experiment. While you are resting, check your pulse and count…