Answer:
I have three heads. Cut off one I become stronger. Cut off two I become ten.
Everyone in the world needs me. They generously give me but never take me. What am I?
What is made of wood, but can't be sawed?
Weight in my belly, trees on my back, nails in my ribs, feet I do lack. What am I?
Who is the most foreign visitor you could imagine?
A little house full of meat, no door to go in and eat.