Recursos educativos body página 57

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Answer. Worms and molluscs
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Remember what you have studied in this section and answer the questions: What do worms look like? What protects a mollusc's body? What three groups are molluscs classified into? Some worms live in…
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Think about it. Energy transfer
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Remember what you have studied in this section and answer the questions: Which has more internal energy: a hot body or a cold body? Explain why. With a classmate, discuss why we can start a fire if we…
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The skeleton
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Our skeleton is made up of bones, joints and cartilage. The skeleton's main functions are: To support our body and give it shape. To help us to move, because our muscles are connected to our bones.…
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Complete. Cellular respiration
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Complete this text with the correct words: lungs - cellular - bloodstream - carbon dioxide - energy - exhale - blood vessels - heart Blood containing oxygen passes from the to the . The heart pumps the…
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End-of-unit evaluation - Machines and structures
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In this unit we will look at electrical circuits, generators and motors that work by magnetism. We will also look at the machines and tools which help us do our work. Finally, we will look at…
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Summaries - Obtaining and using energy
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1. Forms of energy Energy is a property of matter which gives it the ability to produce change in its own physical and chemical properties and in those of other bodies... The main forms. of energy are:…
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Match. The formation of the USSR
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Match each definition with a concept: A federal state that brought together all the nationalities of the old Russian Empire. The highest authority (legislative power), elected by indirect universal…
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End-of-unit activities - Machines and structures
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In this unit we will look at electrical circuits, generators and motors that work by magnetism. We will also look at the machines and tools which help us do our work. Finally, we will look at…
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Introduction - Machines and structures
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In this unit we will look at electrical circuits, generators and motors that work by magnetism. We will also look at the machines and tools which help us do our work. Finally, we will look at…
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Mammals
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Characteristics of mammals Mammals are vertebrates with the following characteristics: They are viviparous. This means that the young develop inside the female's body. The female mammal then gives…
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