Long ago, there lived an Australopithecus girl by the name of Lucy. She died 3.2 million years ago. There are a few molecules of Lucy’s carbon in YOU! Starting from the gaseous CO2 that Lucy exhaled 3.2 million years ago, trace the pathway that that carbon may have taken, in a general way, to get in to your body. Provide a brief overview/sketch of the biological pathways/processes involved as that carbon bounced from one place to another, finally ending up in, say, some spinach