Answer:
an object surviving from an earlier time, especially one of historical or sentimental interest.
Of apple slices and peanut butter modifies snakes. That makes it an adjectival prepositional phrase.
The narrator is Stephen Fry
You could say:
Butterflies are beautiful insects that are often used to symbolize rebirth and the coming of spring.
OR
The existence of past lives and the rebirth of souls in our present day world is a debatable subject in many religions.
