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End-of-unit evaluation - Nutrition, breathing and circulation
EduBook Organización
- 2341 visitas
Our body needs nutrients and oxygen to live and grow. We obtain nutrients from food, and oxygen from the air. In our body, the digestive system gives us the nutrients that we need, and the respiratory…
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The skeleton
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- 2268 visitas
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
EduBook Organización
- 2244 visitas
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
EduBook Organización
- 2198 visitas
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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Think about it. Energy transfer
EduBook Organización
- 2120 visitas
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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Summaries - Obtaining and using energy
EduBook Organización
- 2090 visitas
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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Introduction - Machines and structures
EduBook Organización
- 2078 visitas
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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End-of-unit activities - Machines and structures
EduBook Organización
- 2038 visitas
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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Match. The formation of the USSR
EduBook Organización
- 1936 visitas
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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