Lesson-specific diagram for Food chemistry, photosynthesis, respiration, and carbon transformations. It visualizes the reasoning sequence tied to $\mathrm{6CO_2+6H_2O\rightleftharpoons C_6H_{12}O_6+6O_2}$. Text alternative: Biological and food processes are chemical transformations that conserve atoms while transferring energy through complex pathways. Choose a representation that matches the chemical scale and evidence; do not infer more precision or mechanism than the data support.