Leaves are green because they contain lots of chlorophyll,
the molecule that is responsible for photosynthesis. Chlorophyll is green
because it reflects the green wavelengths of sunlight. It absorbs the blue and
red portions of the visible spectrum and uses the energy of those light waves
to manufacture carbohydrates. But chlorophyll is not the only pigmented
substance in a leaf. There are also yellow and/or orange colored molecules in a
leaf. The orange color

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