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How we breathe in places with no air
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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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Complete. The leaves make the food for the plant
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Complete the text about the parts of a leaf: takes place in the leaves. Therefore the leaf structure must allow the leaf to exchange and to transport water from the and the stem to the leaves. This also…
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Classify. Where Spain fishes
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Which of Spain's fishing grounds have the following characteristics? It is the most important fishing ground in terms of volume and value. It produces a limited amount of fish due to the high…
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The beginning of life
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1.1. The Earth, our planet The Earth is the only planet in the Solar System that has all of the conditions for life to develop. These conditions are the following: Its size, which allows the force of…
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Let's learn how to... - Matter and materials
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Use measuring instruments What do we need? A tape measure or a ruler. Digital scales. A test tube with water. A nail. A cork. A marble. A pencil. What do we do? You are going to measure the length,…
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Rock types
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Sedimentary rocks Common salt is made when sea water evaporates. It is extracted from salt mines. Sandstone is a sedimentary rock made up of grains of sand that are held together by other mineral…
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Complete - Remember
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Complete: The is what is happening in the atmosphere at one place and one time. In the atmosphere, water vapour turns into drops which together make . When rain, hail or snow fall to the ground, it is…
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Choose. Relationship between mass and volume
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Choose the correct solution for each task: What is the mass of the water found in a 5L bottle? What is the density of a ball, if its diameter is 68 mm and its mass is 58 g? An empty can has a mass of 25…
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Worms and molluscs
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Worms Worms are animals with long, soft bodies and moist skin. They do not have legs; they move by wriggling. Most worms live in the sea or in fresh water. Some live on land, like earthworms. Some worms…
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Before you read Ch 5 01 (KET) - How the Camel Got His Hump
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Read this text about camels and complete the spaces. There are two kinds of camels the world. The Arabian Camel or Dromedary has one hump. The Bactrian camel two humps. Camels live in the deserts…