Identification du dépôt vert sur certains platanes du collège; Observation microscopique en 6e4 et 6e6
Le constituant des chromosomes
Influence de l'acidité sur la couleur des fleurs d'hortensias
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
3sSw9DwQ6Ebu4mYn