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Learn. Spontaneous generation - Animal reproduction
EduBook Organización
- 1929 visitas
In ancient times, many people believed that living things could be created spontaneously from decomposing material. Aristotle stated that flies and mosquitoes were produced spontaneously from mud in…
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Complete. The nervous system
EduBook Organización
- 1928 visitas
Look at the first chart and complete it with the parts of the nervous system.
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Temperature and insect growth
EduBook Organización
- 1931 visitas
The body temperature of an insect varies according to the temperature of its surroundings. This is why insects grow more quickly in summer and more slowly in autumn and winter. Each species has its own…
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Work it out. The natural environment
EduBook Organización
- 1923 visitas
Remember what you have studied in this section and answer the questions: What environmental conditions prevent the existence of life on the other planets in the Solar System? Why is light a limiting…
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Answer. Light, shadow and penumbra
EduBook Organización
- 1923 visitas
Remember what you have studied in this section and answer the questions: What is a light ray? Light gives off energy. Give an example of something that shows this.
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Think about it. Light and colours
EduBook Organización
- 1928 visitas
Remember what you have studied in this section and answer the questions: Why is snow white, coal black and grass green? → ...is... because it reflects... and absorbs... If light from the Sun can be…
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The reflection of sound
EduBook Organización
- 1935 visitas
7.1. Reflection of sound Sound is transmitted in a straight line. When it meets obstacles that it cannot cross, like a wall or a rock, it is reflected back in the other direction. Two phenomena caused…
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Complete. Absolutism and liberalism
EduBook Organización
- 1926 visitas
Complete the following sentences with the missing words: feudal system – Holy Alliance – Constitution of Cádiz – Inquisition – Salic Law – repressed – Colonel Riego – Liberal Triennium…
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True/false. The influence of the United States
EduBook Organización
- 1926 visitas
Are the following sentences true or false?: The United States exercised its influence over Third World countries in an effort to maintain geopolitical control of the world. The gold crisis of 1973…
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Check. Francoism: a military dictatorship
EduBook Organización
- 1922 visitas
Remember what you have studied in this section and answer the questions: Describe the characteristics of Franco’s regime: laws, civil rights. Which sectors of society supported the regime? How did…