Coexistence of biological organisms is so important in this universe that they perish if they do not coexist. Coexistence leading to harmony is the philosophy of the universe. Colour plays an important role in this harmony with environment. Men and animals share the earth full of colourful plants and are indeed dependent on them. The birth of colored plants seems to be amazing. It was the spread of minuscule green organisms over the hard, starky barren surface of the cold dead earth that might have prepared it to be the home of human beings million years later.
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