The element phosphorus, on which life heavily depends for its codes and metabolic processes, is a limiting factor for complex beings on habitable planets.
Plants mine energy from a primary source (sun) and transform that energy into a secondary source (sugar).
Is there something adaptive to the enjoyment of colors in such a wild mix; and in our enjoying it at one particular time of the year?
Can you think of an un-designed process that employs external machinery to maintain the state of another machine?
Darwinian evolution, even in its 21st-century form, fails the formidable task of explaining how the first enzyme arose.