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Arbre d'automne
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Franck Prln
Franck Prln
À l'automne, quand il y a moins de lumière et que les températures baissent, la chlorophylle disparaît. Certaines feuilles deviennent alors jaunes, oranges et rouges. ... Pour la couleur rouge, c'est un pigment nommé anthocyane qui est responsable. Il est produit par la feuille quand le taux de chlorophylle diminue.
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