Leaves on a Trembling Aspen tree changing from green color to yellow in autumn because of a decrease in photosynthesis. Populus tremuloides.

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Size: 3030px × 2020px
Location: Douglas Fir Trail, Edworthy Park, Calgary, Alberta, Canada
Photo credit: © Rosanne Tackaberry / Alamy / Afripics
License: Licensed
Model Released: No

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