Autumn colour

Autumn colour, aesthetically one of the best sights in autumn – brilliant red acers and butter yellow hazels, but it all happens for a reason.

Leaves are green because they are full of chlorophyll, which absorbs all but the green part of the light spectrum,  as the weather becomes colder and daylight shortens, photosynthesis slows down and chlorophyll is absorbed by the plant. Leaves become less green and appear yellow, orange and red depending which secondary pigment is present in the greatest amount.

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