Post� le 01/03/2013 � 20:25

Bonjour je suis en classe de seconde . Je me suis proposée pour faire un exposé et  mon professeur m'a donné ce sujet :
Proposer un protocole pour démontrer que l'eau est indispensable à la photosynthèse .
Je dois aussi faire un petit schéma et également développer un maximum pour avoir le même contenu qu'un cours .  Quelqu'un peut il m'aider ? Merci d'avance .

PS : Je dois rester dans le programme de seconde .

Post� le 17/10/2017 � 05:18

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