Good Riddles

Question: Smell me, buy me, and deliver me.
I won't change.

What am I?

Question: I make up all literature, but I'm often sealed.

What am I?

Question: How much dirt is in a hole that has a radius of 33.2 meters and a height of 78.2 meters?

Question: Why did the chicken cross the road?

Question: I can bring tears to your eyes; resurrect the dead, make you smile, and reverse time. I form in an instant but I last a life time. What am I?