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Recursos educativos
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Complete. Characteristics of birds
EduBook Organización
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Complete the sentences with the correct words: beak nest constant wings oviparous The upper limbs of birds take the form of . Birds are warm-blooded animals. Their body temperature is . Birds do not…
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Think about it. The physical properties of matter
EduBook Organización
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Remember what you have studied in this section and answer the questions: Can solids be compressed? Give arguments for and against this idea. All materials expand when you heat them. Why? →…
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Reproduction in mammals
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3.1. Reproduction in mammals Mammals reproduce by internal fertilisation. They are viviparous. Males have a penis that they use to introduce sperm into the female's body. Fertilisation then takes…
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End-of-unit evaluation - The nervous system
EduBook Organización
- 3359 visitas
Right now, you are reading these words and you understand them. If you see food when you are hungry, your mouth starts to water. If you burn your hand, you move it away immediately. You automatically do…
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Complete. Reptiles
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Complete the following sentences with the missing words: were the first vertebrates to live completely on land. The bodies of snakes are covered in . Reptiles have four limbs that end in toes. Most…
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Entry test 01 - The first civilizations: Mesopotamia and Egypt
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Complete the following text with the correct word below: pyramid – afterlife – pharaoh – hieroglyphics – mummification – sarcophagus The king of ancient Egypt, or , had absolute power. When he…
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Breathing (II)
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- 3180 visitas
Exchange of gases in our lungs Our body exchanges oxygen for carbon dioxide inside the pulmonary alveoli. Each alveolus is connected to a network of very small blood vessels, called capillaries. Oxygen…
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Introduction - The nervous system
EduBook Organización
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Right now, you are reading these words and you understand them. If you see food when you are hungry, your mouth starts to water. If you burn your hand, you move it away immediately. You automatically do…
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Self evaluation 8 - Our planet Earth
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- 3195 visitas
Choose the correct answer: Which is the largest planet in the Solar System? Which planet in the Solar System is the nearest to the Sun? Where is the Solar System in the Milky Way galaxy? Ceres and Eris…
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Blood circulation (I)
EduBook Organización
- 3148 visitas
The circulatory system The circulatory system has two very important functions: It transports nutrients and oxygen to all the cells in our body. It collects the waste products that the cells produce.…
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