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Blood circulation (II)
EduBook Organización
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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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Fish
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1.1 Characteristics of fish Fish are perfectly adapted to aquatic life. They are the most numerous and diverse group of vertebrates. There are two main groups of fish: bony fish and cartilaginous fish.…
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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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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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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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Health
EduBook Organización
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Health and illness We say we are in good health when our body works well and we are not ill. Sometimes we get ill. When we are ill, we have symptoms, like a fever, headache or stomach pains. We say that…
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Adrenaline prepares for action
EduBook Organización
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In situations of danger or fear, the adrenal glands produce a hormone called adrenaline. This prepares the body for action, like running or hiding. This is called the fight or flight response.…
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Final self-evaluation T15 02 - Art in the 20th century
EduBook Organización
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Choose the correct answer: What was Bauhaus? What is the name of the school of art from the early 20th century who did not belong to any specific movement? What is Neo-Pop? What is the name of the type…
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Cells
EduBook Organización
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What are cells? All living things are made up of very small components called cells. Some living things are made up of just one cell. However, the majority of living things have more than one cell. For…
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True / False. The cerebrum
EduBook Organización
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Are these sentences true or false? The cerebrum is the most important nervous centre in our body. It contains nearly one million neurons. The outer surface, which is 1.5 to 4 millimetres thick, is…
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