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Tipo de medio
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- Proyectos escolares de quimica
- Pocoyó
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- Centenas, decenas y unidades
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- Gloria Fuertes
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- Juan Carlos Onetti
- Cuerpo humano
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EduBook Organización
- 2675 visitas
There are other involuntary actions produced by neurons that spontaneously release nervous signals. An example of this is the nervous control of automatic breathing. We breathe because of two groups of…
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Investigate. Respiratory system
EduBook Organización
- 2636 visitas
Our respiratory system can be affected by allergies if the air we breathe contains certain substances, like pollen. Asthma and rhinitis are two common types of allergies. What is an allergy? What are…
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Machthe pictures to the sentences
EduBook Organización
- 2138 visitas
Machthe pictures to the sentences: He is using the force of the wind. → The atmosphere is a layer of air that surrounds the Earth. → They produce oxygen. → It can fly because when air…
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Final self-evaluation 10 - Animals
EduBook Organización
- 2111 visitas
Decide if each characteristic relates to mammals or not: They feed their young with milk. ➝ Their eggs have a hard shell. ➝ They have six limbs. ➝ Their skin is covered in hair or fur. ➝ They…
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Air and the atmosphere
EduBook Organización
- 1 lo usan
- 9807 visitas
Humans, plants and animals need air to breathe and live. Air is a mixture of gases. A layer of air covers the Earth and protects life on our planet. This layer of air is called the atmosphere. When air…
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Matter and materials
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- 8320 visitas
Everything around us is made up of matter. Matter can be found in three states: solid, liquid and gas. The air we breathe is a gas, the water in rivers and seas is a liquid, and the rocks are in a solid…
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The Atmosphere
EduBook Organización
- 7025 visitas
The Earth is surrounded by a mixture of gases we call the atmosphere. The air we breathe is part of the atmosphere. The atmosphere is composed of a series of layers. The most important layer is the…
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Activities - Air and the atmosphere
EduBook Organización
- 6016 visitas
Humans, plants and animals need air to breathe and live. Air is a mixture of gases. A layer of air covers the Earth and protects life on our planet. This layer of air is called the atmosphere. When air…
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Self-assessment T8 10 - Nutrition, breathing and circulation
EduBook Organización
- 5786 visitas
Are these sentences true or false? The urinary system consists of the kidneys and the ureters. The circulatory system transports nutrients to all the cells in our body. The kidneys extract water and…
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