A leavening agent is an organism or substance that when added to a dough[?] of flour and water causes it to "rise" by evolving carbon dioxide or other gasses that become trapped as bubbles[?] within the dough.
... average household size is 3.19 and the average family size is 3.47.
In the town the population is spread out with 28.2% under the age of 18, 7.5% from 18 to 24, 33.5% ...