Adverbial clause is an adverb which is a dependent clause. It's used as an adverb in a sentence to show the time, contrast, conditions, place, reason, concession, purpose or result.
Hope i helped!
Horses live to be twenty years old.
(false, horses live 25-32 statistically.)
The correct answer is: songs, origin myths, trickster tales and tribal documents
He proposes to eat the children. (Obviously satirical )