Using the suns Power to synthesise carbohydrates from water and carbon dioxide, chlorophyll is The premise of all plants. Chlorophyll also shares some shocking traits with haemoglobin located in purple blood cells, the key distinction being chlorophylls central magnesium atom in distinction to haemoglobins iron atom. https://ingrid.zcubes.com/zcommunity/z/v.htm?mid=8265633