Humans do aerobic respiration unless ... To work its magic, yeast does a process called anaerobic respiration. We sometimes call it fermentation too. That's explained in this video coming up.

Humans do aerobic respiration unless ... To work its magic, yeast does a process called anaerobic respiration. We sometimes call it fermentation too. That's explained in this video coming up.

Since the mid-1900s, humans have been exerting an ever-increasing ... which require a close association with a host to carry out the process. Most of the symbiotic associations are very specific ...