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Question développement de la face


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Posted

Bonjour, doit-on retenir pour le concours qu’il y a 4 paires d’arcs branchiaux ou 5 paires?

merci d’avance, bonne journée 

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Posted

Coucou ! En réalité il y a 6 pares d’arc branchiaux, mais le 5 ème disparaît très très vite. Donc il faut retenir qu’il y a 5 paires. 

 

Passe une bonne journée 🌸

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