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Final Autoevaluation 1.02 - Plant nutrition
EduBook Organización
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J. van Helmont's experiment Van Helmont (1577-1644), a Flemish doctor and chemist, thought that in addition to water, air and substances in soil, other elements must be necessary for plant…
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How to convert millilitres to litres and vice versa
EduBook Organización
- 1506 visitas
We use the same method to convert volume as we use to convert mass. To convert from millilitres to litres, we divide by 1000. If a bottle contains 200 ml of water, its volume in litres is: 200 / 1000 =…
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Introduction - Our planet Earth
EduBook Organización
- 1476 visitas
Most of the Earth is made up of the geosphere. This is a large sphere of rock with a diameter of 13000 km. A large part of the geosphere is covered by the hydrosphere. This is a layer of liquid water…
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The components of air
EduBook Organización
- 1 lo usan
- 1310 visitas
2.1. Air: a mixture of gases Air is made up of a mixture of gases. The main gases are nitrogen and oxygen. Other gases such as water vapour, carbon dioxide and ozone are present in smaller quantities.…
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Discussion (II)
EduBook Organización
- 1496 visitas
Here is how we say the star signs in English: Aries (the Ram) Taurus (the Bull) Gemini (the Twins) Cancer (the Crab) Leo (the Lion) Virgo (the Virgin) Libra (the Balance) Scorpio (the Scorpion)…
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The weather
EduBook Organización
- 1443 visitas
Climate. Climate describes the general weather conditions of an area over a period of time. Precipitation. Precipitation can fall as rain, snow or hail. Clouds. Clouds are formed when water vapour cools…
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The Sieges of Girona
EduBook Organización
- 1435 visitas
At the beginning of the War of Independence, Girona came under siege three times. The longest and most terrible siege took place between May and December of 1809. More than 30 000 French troops…
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Match. Repercussions of sprawling cities
EduBook Organización
- 1417 visitas
Match the following aspects of sprawling cities with the correct repercussion: An increase in the need for infrastructure, such as street lighting, water and gas supplies, rubbish collection, etc. The…
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Final Autoevaluation 1.02 - Plant nutrition
EduBook Organización
- 1404 visitas
Graph a shows how the size of the pores in the stomata changes when a plant is exposed to light. Describe the changes: ➞ At... o'clock the pores measure... By... o'clock they... bigger/smaller…
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The colours of light
EduBook Organización
- 1396 visitas
What is white light? We see the light from the Sun as white. In reality, it is made up of an infinite number of different colours. We can see this when white light passes through a glass prism or drops…
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