Removing Non-Breaking Spaces En Masse

A bunch of text I copied into a pages document is littered with lots and lots of non-breaking spaces (^ with a dot underneath it, showing up as an invisible).

Does anyone know of a way to select the affected text and convert the non-breaking spaces into regular spaces? Or am I doomed to delete each non-breaking space mark and replace each with a regular space, one at a time, over and over again, ad nauseum (Satan make note)?