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?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

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?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

Which five letter word can be added at the end of below word to form a
valid word?

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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 ?

Name the three-letter word that can complete the below words?

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

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?

John leaves home and then he takes three right turns. John wants to return to home but he was scared of Jacob, who is wearing a mask.

What is John Situation ?

You can see it everyday, But cannot touch it at will. What is it?