Answer:
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 did the bee say to the flower?
It can be in a hat, Or out of the bag. If you see it you'll be smitten, 'Cause it's fluffy like a mitten.
Microparasite expert at sucking the blood of mammals and birds
Attracted by light but flies at night. It's wind and hairy but not too scary. What is it?
Written on with words of white, Has the color of the night, Is the teacher's best delight, And a student's daily fright