Riddle me this

2. What has six faces, But does not wear makeup. It also has twenty-one eyes, But cannot see?
4. 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.
6. What is black when you buy it, red when you use it, and gray when you throw it away?
7. What comes once in a minute, twice in a moment, but never in a thousand years?
9. Before Mount Everest was discovered, what was the highest mountain on Earth?
10. Poor people have it. Rich people need it. If you eat it you die. what is it?
13. What is more useful when it is broken?
14. There was a green house. Inside the green house there was a white house Inside the white house there was a red house. Inside the red house there were lots of babies.
15. David's father has three sons : Snap, Crackle and _____ ?

1. What has many keys, but can't even open a single door?
3. What belongs to you, but other people use it more than you?
4. The more you take, the more you leave behind.
5. What 8 letter word can have a letter taken away and it still makes a word. Take another letter away and it still makes a word. Keep on doing that until you have one letter left.
6. Tall I am young, Short I am old, While with life I glow, Wind is my foe.
8. This is as light as a feather, yet no man can hold it for long.
11. They have not flesh, nor feathers, nor scales, nor bone. Yet they have fingers and thumbs of their own. What are they?
12. I am taken from a mine, and shut up in a wooden case, from which I am never released, and yet I am used by almost everybody.