response: I have no clue, but in nature chlorophyll in plants is the biggest contributor to green.
original_response: In nature yes, it is because chlorophyll is green and there is a lot of plants and vegetation on earth.
history: I love green, its my favourite colur That's cool. Some minerals, like emerald, are green. For emeralds its due to the chromium content. Is it a primary colour? Not in the subtractive color system. But in the RGB system used for television it is used. IIs green the most used colour in the world?
knowledge: By far the largest contributor to green in nature is chlorophyll, the chemical by which plants photosynthesize and convert sunlight into chemical energy.