The more it dries, the wetter it becomes. Can you tell what it is?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

By using 'because' continuously three times, can you make an English statement ?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

I have teeth but i don't bite. Who Am I ?