So humans are examples of heterotrophs. We obtain our carbon source from other organisms. Now, the other side of the spectrum are autotrophs. Autotrophs are examples of organisms that can actually create or synthesize energy containing carbon molecules, organic molecules from inorganic starting materials, such as carbon dioxide. So the prime example of Odotropes are plants. Plants are basically able to use inorganic carbon dioxide, mix it with water to actually form the carbohydrate sugar molecules.