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Matter, materials and measuring
EduBook Organización
- 4043 visitas
What is matter? All the objects around us, including all living and non-living things, are made of matter. Matter is everything that has a weight and a volume. The quantity of matter that an object has…
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A country governed by property owners
EduBook Organización
- 4019 visitas
We must be governed by the best, the best are the most educated and most interested in keeping the laws. However, with few exceptions, the only men with these features are those who have property, who…
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The Solar System
EduBook Organización
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The Solar System is made up of all the celestial bodies that are affected by the Sun's gravity. The most important of these are the planets. Planets Planets are large, round celestial bodies that…
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Mountain landscapes
EduBook Organización
- 3911 visitas
Mountain landscapes Mountains are high elevations of land. A mountain has three parts: The peak is the highest part of the mountain. The foot is the bottom part of the mountain. The slopes are the parts…
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Check. Light and colours
EduBook Organización
- 3830 visitas
Remember what you have studied in this section and answer the questions: What are the three primary colours of light? Why are they called this? What are the three primary colours of pigments? What do we…
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Activities - Plants
EduBook Organización
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Plants are living things. They live in different places. Plants need water and the Sun to grow. They use the water and the light from the Sun to make their own food. Plants reproduce by making seeds.…
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Ocean dynamics
EduBook Organización
- 3798 visitas
3.1. How oceans and seas move The water in oceans and seas is always moving because of waves, tides and ocean currents. Waves Waves are caused by wind moving the water on the surface of the sea. The…
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Blood circulation (II)
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- 3742 visitas
The heart The heart is the organ that pumps blood to all the cells in our body. It is about the size of a closed fist. Its walls are made of muscle tissue. The heart contains four chambers: The two top…
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The city as an ecosystem - Cities and Urban Areas
EduBook Organización
- 3536 visitas
An ecosystem is an area where living things interact with each other and their physical environment. A city is considered to be an ecosystem as many interactions are constantly taking place. Resources…
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Answer. Unicellular and multicellular organisms
EduBook Organización
- 3518 visitas
Remember what you have studied in this section and answer the questions: What are organisms made up of a single cell called? How do they reproduce? What do we call living things that are made up of many…
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