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Les llengües del món. Les varietats lingüístiques
EduBook Organización
- 1854 visitas
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La sociolingüística
EduBook Organización
- 1860 visitas
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Talk about it. Plant nutrition
EduBook Organización
- 1862 visitas
Where do plants get the substances that they need to carry out their vital functions? Why do plants need the Sun? How does the vital function of nutrition differ in plants and animals? Why are plants so…
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Complete. Climatic factors
EduBook Organización
- 1870 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
- 1867 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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Think about it. The periodic table and chemical formulas
EduBook Organización
- 1 lo usan
- 1669 visitas
Remember what you have studied in this section and answer the questions: Why do we use symbols for elements and compounds? → We use symbols… to make it easier to… Nomenclature is different in…
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Define. These terms
EduBook Organización
- 1865 visitas
Define this concepts: Trajectory, origin and position Displacement and distance travelled Circular and rectilinear motion Mass and weight Pressure Density Upthrust
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Ways to save energy
EduBook Organización
- 1866 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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True/False. Photographic camera
EduBook Organización
- 1860 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…