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Think about it. The sense organs adapt
EduBook Organización
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Remember what you have studied in this section and answer the questions: When you spin around and around, why do you think you get dizzy? Discuss this with your class. Are the senses of taste and smell…
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Think about it. Photosynthesis and respiration
EduBook Organización
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Remember what you have studied in this section and answer the questions: Some people say you should not keep plants in your bedroom. Is there a scientific basis for this belief? Can you explain why or…
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Think about it. Sexual reproduction in animals
EduBook Organización
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Remember what you have studied in this section and answer the questions: Fish that guard their eggs produce fewer eggs than other fish. Why? Animals could not live on land until internal fertilisation…
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Think about it. Reproduction in living things
EduBook Organización
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Remember what you have studied in this section and answer the questions: Choose an organism. Tell your classmates what type of reproduction it uses and how it does this: What does genetically identical…
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Think about it. Transport between cells
EduBook Organización
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Remember what you have studied in this section and answer the questions: Explain to a classmate how the heart works: Where does the circulatory system transport oxygen and carbon dioxide to? Why? Make a…
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Think about it. Light, shadow and penumbra
EduBook Organización
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Remember what you have studied in this section and answer the questions: With a classmate, explain the difference between shadow and penumbra. What is the difference between an eclipse of the Sun and…
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Think about it. Forms of energy
EduBook Organización
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Remember what you have studied in this section and answer the questions: Complete the sentences to explain how energy is converted: The electrical energy in a radiator is converted into... The…
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Think about it. Asexual reproduction in plants
EduBook Organización
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Remember what you have studied in this section and answer the questions: List the asexual reproduction organs we use for food. Can you and a classmate give other examples? What is the best method of…
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Think. The exploitation of the Amazon rainforest
EduBook Organización
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Reflect on the deforestation suffered by the Amazon rainforest and answer the questions: What environmetal problems can the disappearance of the Amazon rainforest cause? Does the exploitation of the…
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Think about it. The natural environment
EduBook Organización
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Remember what you have studied in this section and answer the questions: Why does water exist in a liquid state on Earth but not on other planets? What functions does water have for living things?…