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The process of plant reproduction
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The pollen grains fall on the pistil. It can be the same flower or a different flower. The flower is pollinated. The ovule becomes a seed. The pistil grows into a fruit. The other parts of the flower…
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Before you start - The Earth, a Living Planet
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Didactic objetives Recognise the conditions that had to exist on Earth to allow for the existence of living beings. To know and be able to identify the elements involved in the emergence of life on our…
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Pure substances: elements and compounds
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3.1. Pure substances and mixtures Pure substances are substances which have a fixed composition and properties which allow us to identify them. Mixtures are made up of two or more pure substances. 3.2.…
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Climate change - Society and the environment
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- 3853 visitas
What is climate change? Climate change is the combination of changes in the Earth’s climate because of an increase in the planet's temperature. Examples of these changes are rising sea levels or…
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Final self- evaluation 9.02 - The Habsburg Dynasty
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Which of the following statements are true or false?: During the reign of Charles I, the most important domestic problems were the revolts of the Comuneros and of the Brotherhoods. Charles I abdicated…
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True/false. Economic and social development in the 16th century
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Are the following sentences true or false?: In the 16th century, there was an enormous demand for products to export to America. The agricultural production of the Spanish kingdoms could not cover the…
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The natural environment
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1.1. The energy of the sun and life The ecosphere is a hypothetical zone existing around any star where the temperature allows life to exist. The conditions which make it possible for life to exist on…
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Unit 5: Weather and climate
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Altitude (n): the height of land measured from sea level. atmosphere (n): a gaseous layer that surrounds the Earth. climate (n): the atmospheric conditions that exist in a region over a long period of…
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Answer. The fruit. The dispersal and germination of seeds
EduBook Organización
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Remember what you have studied in this section and answer the questions: What happens to the pistil as the seed develops? Give two examples of fleshy fruits and two examples of dry fruits. How many…
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Introduction 01
EduBook Organización
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Are these sentences true (T) or (F)? Tick (3) the correct box. San Francisco is on a peninsula on the Atlantic Ocean. It rains a lot in San Francisco but there are no earthquakes. There are fog horns at…
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