In computational complexity theory, a problem refers to the abstract question to be solved. In contrast, an instance of this problem is a rather concrete utterance, which can serve as the input for a decision problem. For example, consider the problem of primality testing.
Oxygen plays a vital role in both the aerobic and anaerobic metabolic systems. While oxygen is required as a direct energy source in the aerobic system, it is also essential in clearing the blood of excess lactic acid buildup in the anaerobic system.
1) Aerobic energy system. Distance running uses aerobic energy. Aerobic means âwith airâ. Oxygen provides the catalyst for a chemical reaction in our muscles (including the heart) that generates aerobic energy.) Aerobic energy system. Distance running uses aerobic energy. Aerobic means âwith airâ. Oxygen provides the catalyst for a chemical reaction in our muscles (including the heart) that generates aerobic energy.