Translations:AY Honors/Temperate Deciduous Forests/Answer Key/56/en
From Pathfinder Wiki
The green color of leaves is caused by chlorophyll, which is what traps the sun’s energy so that the leaves can make chemical energy. In the fall when it gets cold, the chlorophyll can become toxic. So in the fall the trees breakdown the chlorophyll, which reveals other pigments in the leaves (yellow, orange, brown and red).
