Which organelle contains digestive enzymes that break down waste material and debris in the cell?

Atreatment for stuttering in which the person is asked to speak in a singsong fashion, usually with the aid of a metronome is

Skeleton and keyword outlines are most appropriate for what speech style? extemporaneous impromptu manuscript memorized

Are people more motivated to change from positive or negative experiences, like slavery, womens rights, and any other historical movements/moments? i need more factual information than opinions.