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True / false. The Earth
EduBook Organización
- 6432 visitas
Answer true or false: The Earth is flattened at the poles. From space, the Earth looks blue because of the oxygen in the atmosphere. The equator is an imaginary line that divides the Earth into east and…
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Air and the atmosphere
EduBook Organización
- 6042 visitas
What is air? Air is a mixture of gases. It forms the atmosphere around us. Air is made up of two main gases: nitrogen and oxygen. It also has other gases, including water vapour and carbon dioxide.…
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Investigate - Animal nutrition
EduBook Organización
- 5806 visitas
Animals are heterotrophic organisms; they cannot make the organic material they need to eat. They can get organic material from other animals and from plants. Plants are the only living things that can…
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End-of-unit evaluation - Animal nutrition
EduBook Organización
- 1 lo usan
- 5581 visitas
Animals are heterotrophic organisms; they cannot make the organic material they need to eat. They can get organic material from other animals and from plants. Plants are the only living things that can…
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Remember - Animal nutrition
EduBook Organización
- 5348 visitas
Animals are heterotrophic organisms; they cannot make the organic material they need to eat. They can get organic material from other animals and from plants. Plants are the only living things that can…
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Self-assessment T8 10 - Nutrition, breathing and circulation
EduBook Organización
- 5315 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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Introduction - Animal nutrition
EduBook Organización
- 5288 visitas
Animals are heterotrophic organisms; they cannot make the organic material they need to eat. They can get organic material from other animals and from plants. Plants are the only living things that can…
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Planet Earth
EduBook Organización
- 4997 visitas
2.1. The blue planet From space, the Earth looks blue. This is because of the oxygen in the atmosphere and the abundance of seas and oceans. The Earth is often given the name the Blue Planet. The Earth…
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Test the properties of air
EduBook Organización
- 4616 visitas
What is air? Air is a mixture of gases. It forms the atmosphere around us. Air is made up of two main gases: nitrogen and oxygen. It also has other gases, including water vapour and carbon dioxide.…
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Pure substances: elements and compounds
EduBook Organización
- 3727 visitas
3.1. Pure substances and mixtures Pure substances are substances which have a fixed composition and properties which allow us to identify them. Mixtures are made up of two or more pure substances. 3.2.…
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