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.
... units at an average density of 155.8/km² (403.6/mi²). The racial makeup of the town is 82.46% White, 7.39% African American, 0.08% Native American, 1.62% Asian, ...