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Match. The erosion process
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Match the definitions to the terms: When water, ice and wind erode small pieces of rock away from their original location: When sediment is deposited at the mouth of a river or under the sea: When water…
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The nervous system
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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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True/false. The simplest invertebrates
EduBook Organización
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Are the following sentences true or false? Sponges are plants that live on rocks in the sea. Sponges have cells with flagella, called choanocytes, to move around. Most flatworms are parasites.…
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End-of-unit activities - 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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Initial self-evaluation T4 03 - Rivers and seas
EduBook Organización
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Are the following statements true or false?: Flow is the amount of water that a river carries. A river meanders in its upper course. A river causes more erosion in its lower course. The materials…
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End-of-unit evaluation - 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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Introduction - The nervous system
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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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Think about it. Feeding and digestion in animals
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Remember what you have studied in this section and answer the questions: Animals get energy from nutrients. Why do they need this energy? The animals that have evolved the most have hard parts in their…
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Oral hygiene
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Microbes live inside our mouth and consume the food left between our teeth. These microbes manufacture substances that produce cavities in our teeth. This is called tooth decay. To avoid tooth decay, it…
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Complete. Molluscs
EduBook Organización
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Write correct words to replace the underlined ones: tentacles cephalopods cuttlefish shell The majority of molluscs have a hard external covering called a valve . However in gastropods , if it exists,…
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