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Think about it. The removal of cell waste
EduBook Organización
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Remember what you have studied in this section and answer the questions: Why do sponges and coelenterates not need excretory organs? What is the difference between defecation and excretion? Why is more…
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Work it out. Animal nutrition
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Remember what you have studied in this section and answer the questions: Is it possible to find a digestive system that does not use mechanical processes? And chemical processes? Explain your answer.…
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Investigate. The germination of pollen grains
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In this practical, you can see the germination process of pollen grains. Under normal conditions this takes place in the flower's stigma. Equipment A flower, a dropper, a microscope, a paintbrush, a…
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Learn. How to find out the age of a human foetus
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The approximate age of a foetus can be determined by scanning the mother's abdomen with an ultrasound machine. This method is usually used at a clinic to check that a pregnancy is progressing well…
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Talk about it. Obtaining and using energy
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Look at the pictures and answer the questions: Is the Sun a source of energy? And a bonfire? List five sources of energy. Which of them could run out? Will we always have oil to use? Name a source of…
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Choose. American colonies independence
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Choose the correct ending for each sentence: Because they paid taxes to Spain but could not control trade or obtain positions of power... One of the factors that influenced the process of independence…
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Final self-evaluation T10 05 - A time of conflict in Spain (1902-1939)
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Complete the text about "Russia's children" with the missing words or numbers: Santander – Republican – France – Russia – 3000 – children – returned – horrors The government…
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Final evaluation T11 02 - A bipolar world: the cold war and decolonisati...
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What were the Cold War and peaceful coexistence?
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Complete. The Socialist Party governments
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Complete the sentences with the missing words or dates: The socialists of the PSOE, led by Felipe , governed Spain for four terms between 1982 and . The priorities of the first socialist government…
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Biztanleriaren eta gizartearen bilakaera
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Biztanleriaren eta gizartearen bilakaera Euskal lurraldeak Aro Modernoan