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Rocky Mountain National Park A researcher using telemetry equipment.
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Rocky Mountain National Park
Fall Leaves
a photo of fall leaves
Photo courtesy of Rocky Mountain National Park.


  
Aspen leaves turn golden in the fall due to their carotene accessory pigments while Fremont geranium (Geranium caespitosum) leaves have turned red because of their anthocyanin accessory pigments.

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Last Updated: July 18, 2007 at 12:31 MST