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.
... Molokai, Hawaii.
He was born in Tremeloo, Belgium, the son of a farmer. He entered the novitiate of the Fathers of the Sacred Heart of Jesus and Mary[?] at Louvain, and ...