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

What goes up but never comes down?

There are two words one resembles the "state of rest" and the other is related to "writing/reading material".

Can you name these two words which also sound similar?

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

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

What English word has three consecutive double letters?

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?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

What is at the end of a rainbow?