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Sabías que…
EduBook Organización
- 1965 visitas
El régimen franquista adoptó el término fascista de "democracia orgánica" para definir su sistema político frente a la democracia liberal. En este sistema, los miembros de las instituciones…
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Learn to discover the starch in a leaf and see how stomata function
EduBook Organización
- 1978 visitas
1. Objective: to discover if starch is present in a leaf Plants store the glucose made during photosynthesis as starch. To test this hypothesis, a leaf will be examined for the presence of starch.…
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Think about it. Trophic relationships in ecosystems
EduBook Organización
- 1970 visitas
Remember what you have studied in this section and answer the questions: Are feeding relationships intraspecific or interspecific? Explain your answer. Why can there only be four or five trophic levels?…
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Internal geodynamics and surface relief
EduBook Organización
- 1968 visitas
The forces inside the Earth cause mountain chains to form They also deform rocks and form folds, or break rocks and cause geological faults or joints. 6.1. Mountain ranges Mountain ranges are chains of…
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True and False. Equilibrium
EduBook Organización
- 1968 visitas
Answer true or false: An object is in equilibrium when the sum of the forces acting upon it is equal to zero. If an object is in equilibrium it cannot be moving. A block at rest hanging on the cable of…
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Upthrust and buoyancy in liquids
EduBook Organización
- 1971 visitas
7.1. Archimedes' principle If we try to submerge a ball in a container of water, the water exerts a vertical upward force known as upthrust. According to Archimedes' principle: A body totally or…
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Analyse. The illustrations
EduBook Organización
- 1967 visitas
Having looked carefully at these two scenes, analyse the advantages and disadvantages of modern technological society from the point of view of energy use.
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Choose. Political system of the United States
EduBook Organización
- 1966 visitas
Decide whether each sentence refers to England or the United States: The Bill of Rights limited the power of the king. The 1789 Bill of Rights guaranteed freedoms for all citizens. A federal government…
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Check. Enlightened reformism in Spain
EduBook Organización
- 1966 visitas
Remember what you have studied in this section and answer the questions: Which Enlightenment thinkers in Spain collaborated with the king? Make a table showing the key objectives of Spain's…
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Interpret. Emigrations to America
EduBook Organización
- 1969 visitas
Look at the graph and answer the questions: Which regions lost more population? What do those regions have in common? Where did the majority of emigrants come from? Where did they emigrate to?