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True/false. The evolution of industry and mining
EduBook Organización
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Are the following sentences true or false?: Most of the coal and iron produced in Spain was for the domestic market. The coal used in Spain came primarily from Asturias and León. In Catalonia,…
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Feeding and digestion in animals
EduBook Organización
- 2881 visitas
1.1. How do animals feed? Animals are heterotrophic; they need to find food and transform it to get nutrients. These substances provide energy and materials the animal needs to grow, make new tissues…
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Introduction - Nutrition, breathing and circulation
EduBook Organización
- 2846 visitas
Our body needs nutrients and oxygen to live and grow. We obtain nutrients from food, and oxygen from the air. In our body, the digestive system gives us the nutrients that we need, and the respiratory…
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Introduction - Economic activity in Spain
EduBook Organización
- 2817 visitas
Spain has a labour force of over 21 million people who work in three economic sectors. People who work in the primary sector mainly work in farming and fishing. The secondary sector includes mining,…
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End-of-unit evaluation - Economic activity in Spain
EduBook Organización
- 2754 visitas
Spain has a labour force of over 21 million people who work in three economic sectors. People who work in the primary sector mainly work in farming and fishing. The secondary sector includes mining,…
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Summaries - Animal nutrition
EduBook Organización
- 2746 visitas
1. Feeding and digestion in animals Animals are heterotrophic; they need to find food and transform it to get nutrients. These substances provide energy and materials the animal needs to grow, make new…
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How we breathe in places with no air
EduBook Organización
- 2622 visitas
We need air to breathe Humans and other animals that live on land need air to live. When we breathe, we take oxygen from the air. With this oxygen and with the food we eat, our body has the energy it…
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The natural environment
EduBook Organización
- 2607 visitas
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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Summaries - Science and technology
EduBook Organización
- 2553 visitas
1. Science and technology in today's world During the 20th century and the beginning of the 21st century, people made great advances which have improved the quality of life for people all over the…
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End-of-unit activities - Nutrition, breathing and circulation
EduBook Organización
- 2479 visitas
Our body needs nutrients and oxygen to live and grow. We obtain nutrients from food, and oxygen from the air. In our body, the digestive system gives us the nutrients that we need, and the respiratory…
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