Why is anaerobic respiration energetically less efficient than aerobic respiration?

Aerobic respiration is a type of cellular respiration that occurs when there is no enough oxygen in the respiratory cells. It is considered to be less efficient since it produces less energy as compared to aerobic respiration

The whole world has been in Quarantine for about 9 months now. The new norm is to be wearing masks everywhere you go outside. There’s not much to do these days since most things are closed. Some people have lost there jobs or haven’t gone back to work in a while. Then there’s the people who are just bored.