What does not live but can die?

Answer: A battery.
 

What has roots that nobody sees,
is taller than a tree,
up, up it goes and yet never grows?

Answer: A mountain.
 

What has wings,
Can fly,
But is not living?

Answer: A plane.
 

I'm hard all around but soft in the middle. What am I?

Answer: A bed.
 

I hang or stand by a wall, run fast with hands but no feet at all. What am I?

Answer: A clock.
 

Rough and gray as rock,
I'm plain as plain can be.
But hidden deep inside there's great beauty in me.
What am I?

Answer: An oyster.