Final answer:
Pigments travel different distances due to their chemical composition.
Step-by-step explanation:
Pigments travel different distances due to their chemical composition. Each type of pigment absorbs specific wavelengths of visible light, which is known as its absorption spectrum. For example, chlorophyll a absorbs blue and red light but not green, which is why it appears green. Carotenoids absorb in the blue region and reflect longer wavelengths of yellow, red, and orange.