Answer:
I can climb mountains, cross streams, handle hundreds of feet each day, yet I never move. What am I?
I destroy your home from the inside out.
Sometimes I am white, sometimes I am dark. Most people love me. What am I?
Squeeze me and I cry tears as red as my flesh but my heart is made of stone.
I shift around though always slowly. I never move more than a few inches at a time. A large movement by me can kill many people. I am huge yet unseen by humans.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.