Answer:
I am what remains when nothing is left.What am I?
Tall in the morning, short at noon, gone at night. But I'll be back soon.
What is full of holes, but can still hold a lot of water?
Snake coiled round and round. Snake deep below the ground. Snake that's never had a head. Snake that binds but not with dread.
A leathery snake, with a stinging bite. I'll stay coiled up, unless I must fight.
What is so fragile that saying its name breaks it?