Answer:
Take it and you will lose or gain more than the others.
You use me from your head to your toes. The more I work, the thinner I grow. What am I?
Man walks over, man walks under, in times of war he burns asunder. What is it?
No matter how much rain gets on me, I won't get any wetter. What am I?
I am a path between high natural masses; remove the first letter to get a path between man-made masses.
A little house full of meat, no door to go in and eat.