Which causes fermentation

Fermentation is a process that mainly converts the carbohydrates to energy and also converts sugar to acids, alcohol or gases. Fermentation is a process that allows any organism to survive without oxygen and fermentation is the cells main ATP producing stimulant. The study and science of formation is known as Zymology. Fermentation is a process that is most common in certain organisms like yeast, bacteria etc. Fermentation comes to human use as well for making alcohols and different types of breads.