The energy yield in terms of ATP is higher in aerobic respiration than during anaerobic respiration. Why is there anaerobic respiration even in organism that live in aerobic condition like human beings and angiosperms ?

Explanation

Aerobic resipration occurs in normal conditions in human beings. Under intense conditions such as excercises heavy, muscles demand too much energy (ATP) and consume much more oxygen to produce that energy.
This high consumption leads to oxygen scarcity and the muscle celsl being to make under acid by anaerobic respiration to fulfill their energetic , Similiarly , yeast cells under dificeient conditions of oxygen carry out anaerobic respiration, forming ethyl alcohol and `CO_(2)`