About This Lesson
This NBC Learn video explains the role of the pigment molecule chlorophyll when tree foliage in northern areas changes in autumn from green to shades of yellow, orange and red.
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This NBC Learn video explains the role of the pigment molecule chlorophyll when tree foliage in northern areas changes in autumn from green to shades of yellow, orange and red.
LP_Wk_23-HS_ChangeLeaves.doc
LP_Wk_23-MS_ChangeLeaves.doc