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The digestive system (II)
EduBook Organización
- 2892 visitas
The mouth The mouth is the opening to the alimentary canal. We use our jaw to open and close our mouth. The inside of the mouth is made up of: Our teeth, which we use to chew our food. Our tongue, which…
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Complete. Today's emigrants
EduBook Organización
- 2861 visitas
Complete the sentences with the missing words: Today, migration affects almost all countries, whether it be the emigrant countries or the countries. There are different groups of migrants, whether they…
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Let's learn how to... - Air and the atmosphere
EduBook Organización
- 2861 visitas
Observe how air can move water What do we need? A plastic bottle. A plastic tube. A big plastic bowl. Plasticine. Water. What do we do? Cut the top off the bottle and fill it with water. Fill half of…
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End-of-unit activities - Towards a global system
EduBook Organización
- 2853 visitas
Nowadays, people, information and capital move around the world at great speed. This has led to the creation of a global, capitalist and market economy. This economy now dominates the whole planet and…
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Check. Materials that conduct and insulate heat
EduBook Organización
- 2818 visitas
Remember what you have studied in this section and answer the questions: What are the three ways by which heat is propagated? Give one example of each. Does matter move in convection? And in radiation?…
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Unha máquina composta: a bicicleta
EduBook Organización
- 2802 visitas
A bicicleta é unha máquina composta, xa que consta de varias máquinas simples: pancas nos freos, o prato e o piñón traseiro que forman a engrenaxe de cadea, e as rodas. A enerxía que move esta…
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Video: Introduction to Metabolism
Tiching explorer Organización
- 4797 visitas
This lesson includes an overview of metabolism, distinguishing between autotrophs and heterotrophs organisms and between catabolism and anabolism. We study intermediary metabolism and what a metabolite…
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Inhaling and exhaling
EduBook Organización
- 2736 visitas
Air is renewed in the pulmonary alveoli of the lungs when we inhale and exhale. When we inhale, our lungs expand and when we exhale, our lungs contract. We use a large muscle called the diaphragm and…
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