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Composition de l'air
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Prénom
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Quel gaz est majoritaire dans un volume d'air ?
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Argon
Azote
Oxygène
Vapeur
On considère que la frontière atmosphère/espace se situe à :
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55 km
1000 km
250 km
100 km
L'ozone est une molécule qui contient
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2 atome d'azote
3 atomes d'oxygène
2 atome de carbone
L'air contient (cochez les bonnes cases)
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azote
oxygène
aérosols
carbone
dioxyde de carbone
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