Live Without

I live without a body, hear without ears, speak without a mouth, to which the air alone gives birth to me. What am I?

Answer: An Echo! 

From the Mine to the Wood

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?

Answer: Pencil Lead!

Have it, Need it

Poor people have it. Rich people need it. If you eat it you die. What is it?

Answer: Nothing! 

In the air!

A hundred feet in the air, but it's back is on the ground. What is it?

Answer: A centipede flipped over!

Share? I'm Gone!

When you have me, you feel like sharing me.
But, if you do share me, then you won’t have me.

What am I?

Answer: A secret! 

Full To The Top

I'm sometimes full, but I never overflow.
What am I?

Answer: The moon! 

One Color, Any Size.

Only one color, but not one size,
Stuck at the bottom, yet easily flies,
Present in sun, but not in rain,
Doing no harm, and feeling no pain.

What am I?

Answer: A Shadow!