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Decades: 550s BC - 540s BC - 530s BC - 520s BC - 510s BC - 500s BC - 490s BC - 480s BC - 470s BC - 460s BC - 450s BC
Significant People
... into the environment. In green plants and algae, the pigment molecules that initially absorb the light energy are chlorophyll and various carotenoids[?]. Bacteri ...