When making yeast bread dough the rises What is this proscesss called?

The process of yeast bread dough rising is called fermentation.

Here's why:

* Yeast and Sugar: Yeast is a living organism that feeds on sugar. In dough, the yeast consumes sugars from the flour and releases carbon dioxide as a byproduct.

* Gas Bubbles: The carbon dioxide gas gets trapped in the dough, creating tiny bubbles. These bubbles are what make the dough rise.

* Gluten: The gluten in the dough, which is a protein network formed from the flour, gives the dough structure. The gluten stretches and traps the gas bubbles, making the dough rise.

So, fermentation is the process of the yeast consuming sugar, producing carbon dioxide, and creating the bubbles that make your bread dough rise.