Answer:
The more holes you cover the lower I go.
I come out of the earth, I am sold in the market. The one who buys me cuts my tail, takes off my suit of silk, and weeps beside me when I am dead. What am I?
What time of day, when written in a capital letters, is the same forwards, backwards, and upside down?
I'm not alive but I grow I don't have lungs but I need air I don't have a mouth but water can kill me. What am I?
Everyone in the world needs me. They generously give me but never take me. What am I?
Of these things - I have two. One for me - and one for you. And when you ask about the price, I simply smile and nod twice.