Answer:
I'm not a bird but I can fly through the sky. I'm not a river but I'm full of water.
I hide but my head is outside. What am I?
I am a desire to munch
Everyone asks for me but yet everyone hates to face me. For someone I am agony for others I am relief. Who am I?
What has a bottom at the top?
What begins and has no end? What is the ending of all that begins?