Structural colors and colors based on pigments

Question: Discuss the difference between structural colors and colors based on pigments? How do the chromatophores of vertebrates and cephalopod molluscs differ in structure and function?
Question: As “naked apes” humans lack the protective investment of fur the shields other mammals from the damaging effects of sunlight. How does human skin respond to ultraviolet radiation in the short term and with continued exposure?

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