1. photosynthesis 2. autotroph 3.Grass 4. Decomposers 5. Chemical digestion 6. Tertiary consumers 7. Because of this inefficiency, there is only enough food for a few top level consumers, but there is lots of food for herbivores lower down on the food chain. 8. During photosynthesis 9. Photosynthesis is a series of chemical reactions that convert carbon dioxide and water into glucose (sugar) and oxygen in the presence of sunlight.
