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Recursos educativos
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Tipología
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The formation of seeds and fruits
EduBook Organización
- 1901 visitas
5.1. The formation of the seed After fertilisation, the petals, sepals and stamens wither and fall off. The style and the stigma often also fall off. Only the ovary remains, containing the fertilised…
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Complete. Climatic factors
EduBook Organización
- 1884 visitas
Complete the text using the words below: taiga - rainfall - deciduous - climatic - metamorphosis - cold The most influential abiotic factors are , above all temperature and , they influence life on…
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Mycorrhizas, a beneficial association
EduBook Organización
- 1893 visitas
Certain fungi in the soil live with the roots of the majority of plants in a generally mutualistic association called a mycorrhiza. Mycorrhizas are found in the majority of trees in tropical zones and…
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Calculate. Mass and weight
EduBook Organización
- 1892 visitas
Remember what you have studied in this section and answer the questions: Determine the weights of the following masses: 20 kg 50 kg 100 kg Determine the mass of three bodies whose weights are as…
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Ways to save energy
EduBook Organización
- 1894 visitas
Look at the pictures and answer the questions. Which of these measures do you apply? Which do you think are the most useful?
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Final Autoevaluation T10 01 - Obtaining and using energy
EduBook Organización
- 1898 visitas
Choose the correct answer: What type of energy is produced when a girl is moving on roller skate? How is this energy transformed when she goes up hill? When a an elastic bow shoots an arrow to the…
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Effects of heat on bodies (II)
EduBook Organización
- 1895 visitas
4.1. Expansion The term expansion refers to the increase in a substance's volume. This causes a reduction in the substance's density. The opposite effect is called contraction. The particles…
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True/False. Photographic camera
EduBook Organización
- 1887 visitas
Answer true or false: The diaphragm regulates the passage of light. The objective lens is convergent. The objective lens consists of three or more lenses. The image formed within the chamber is larger…
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Reflect. Tyranny
EduBook Organización
- 1897 visitas
Why was the concentration of power in one person considered tyranny by philosophers like Montesquieu?
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Final self-evaluation T03 05 - The industrialisation of European societies
EduBook Organización
- 1901 visitas
Complete this text about the causes of the Industrial Revolution with the missing words: techniques – technological – innovation – production – birth rate – death rate – rise – living –…