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Farben
Mots RouletteFarben
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Air Humidity
CompléterHumidity is an important factor when considering weather. Do you know everything about it?
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Water as a Resource
CompléterWater is an essential resource. Unfortunately, it is scarce. Do you know everything about it?
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Earth's Structure
CompléterThe Earth can be divided in different layers, that help us to understand Eathquakes, Volcanoes...
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Our galaxy, the Milky Way
CompléterOur Galaxy is huge and contains millions of celestial bodies. Do you know them all?