Photosynthesis
Sunlight maintains and increases the orderliness of life by two methods: (1) directly, in the process of photosynthesis, which produces complex organic compounds, and (2) indirectly, in the respiration of those organic compounds, either by the organism itself or when it is consumed by another organism. (263) The two categories under this heading are Photoautotrophs, and Heterotrophs. Autotrophs make their own food, while Heterotrophs rely on food sources outside of themselves. Photoautotrophs include all green plants, all cyanobacteria, and a few bacteria capable of p…
