Good Riddles

Question: 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.

What am I?

Question: It dances and skips,
it's read in the eyes but it cheats with the hips,
If it meets its match it's easily caught,
but it's worth nothing if it is bought.
What is it?

Question: A five lettered word, I'm used to make bread.
Remove one letter and I'll burn you instead.
Remove two and do this to your stew.
Mix that around and a good drink we will brew.

Question: How many apples grow on a tree?

Question: Two girls ate dinner together. They both ordered ice tea. One girl drank them very fast and drank five of them in the time it took the other to drink one. The girl who drank one died while the other survived. All of the drinks were poisoned.

Why did the girl that drank more ice tea survive?