Final answer:
The process shown by the chemical reaction is photosynthesis, and a 10% ecological efficiency rate means that 10% of the energy at one trophic level is passed on to the next higher trophic level.
Step-by-step explanation:
The reaction 6O2 + C6H12O6 → 6H2O + 6CO2 illustrates the process of photosynthesis, in which plants convert carbon dioxide and water into glucose and oxygen using sunlight.
The statement that the rate of ecological efficiency is 10% means that only about 10% of the energy at one trophic level is actually passed on to the next higher trophic level. The correct answer to the question is D. 10% of energy captured at one trophic level is passed on to the next higher trophic level. This is because the other 90% of the energy is used within the lower trophic level for metabolism, growth, and repair or is lost to the environment as heat or incompletely digested food.