Bread becomes porous due to release of `CO_(2)` by the action of

In manufacture of bread, it becomes porous due to release of CO_(2) by the action of

During the formation of bread, it becomes porous due to release of CO_(2) by the action of

During the formation of bread, it becomes porous due to release of CO_(2) by the action of :

In manufacture of bread, it becomes porous due to release of CO_(2) by the action of

Bread dough rises because of the action of

Bread dough rises because of the action of

Bread mould is not due to -

Ozone layer in the stratosphere becomes thinner due to the release of CFCs. Give a scientific reason for this .