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more cereal?

This is one of my fave plants that I see around, its pink to purple colours made of various pigments (as you will find out), stand out. And what causes these colours? "excitation electron transitions between the quantum mechanical orbitals associated with bonds" (again, read on and find out).

and thank you again Andre Jagger for your stunning illustrations, and fine work. Over to you.....

In this final part on C. argentea, the writer examines some of the rich and known bi