The answer is C. Because aerobic cellular respiration includes oxygen in the process, more ATP (specifically 36-38 ATP) is produced. Because anaerobic cellular respiration does not include oxygen in the process, it only produces 2 ATP.
Answer: The role of an organism in the ecosystem is called its NICHE.
Explanation: The niche (pronounced 'neesh') of an organism is the specific function and purpose of the organism within its environment, ecosystem or food-web or food-chain.
I believe that the answer is b