Answer:
What animal has no wings, but yet will fly?
My first is twice in apple but not once in tart. My second is in liver but not in heart. My third is in giant and also in ghost. Whole I'm best when I am toast.
What has a horn but does not work?
Who is it that rows quickly with four oars but never comes out under his own roof?
What can provide food before it is alive, while it is alive and after it's dead?
I can be found in water but never wet