What is at the end of a rainbow?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

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?

What runs around the whole yard without moving?

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 ?

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

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

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

It is always ahead of me yet I can never see it. What is it?

What will you call your mother's brother's brother-in-law?