What is the main difference between aerobic respiration and anaerobic respiration? Give one example of each.

(N/A) The main differences are:
$(i)$ Aerobic respiration occurs in the presence of $O_2$, whereas anaerobic respiration occurs in the absence of $O_2$.
(ii) In aerobic respiration, food is completely broken down into $CO_2$ and $H_2O$, releasing a large amount of energy. In anaerobic respiration, food is partially broken down into ethanol or lactic acid, releasing much less energy.
Examples:
Aerobic: Human beings.
Anaerobic: Yeast.