Answer:
Aerobic respiration occurs in the presence of oxygen.
C6H12O6(glucose) –> 2CH3CH2OH(ethanol) +2CO( carbon dioxide) + energy
Anaerobic respiration get energy by breaking down glucose in the complete absence of oxygen.
C6H12O6(glucose) –> 2CH3CH(OH)COOH (Lactic acid) + energy.