There have been centrists in both sides of politics, who serve alongside the various factions within the Liberal and Labor parties. In addition, there are a number of smaller groups that have formed in response to the bipartisan system who uphold centrist ideals.
Photosynthesis is the process by which organisms that contain the pigment chlorophyll convert light energy into chemical energy which can be stored in the molecular bonds of organic molecules (e.g., sugars). Photosynthesis powers almost all trophic chains and food webs on the Earth.
Carbon dioxide [carbon dioxide: A gaseous compound of carbon and oxygen, which is a by-product of respiration, and which is needed by plants for photosynthesis.] is a waste product of respiration and is formed from carbon and oxygen which were originally part of the food molecules.