Hardest riddle of all time

Hardest riddle of all time

1. I speak without a mouth and hear without ears. I have no body, but I come alive with wind. What am I?
   Answer: An echo.
2. I am taken from a mine and shut in a wooden case from which I am never released. Yet, I am used by almost every person. What am I?
   Answer: Pencil lead/graphite.
3. I am always hungry, I must always be fed. The finger I touch will soon turn red. What am I?
   Answer: Fire.
4. The more you take, the more you leave behind. What am I?
   Answer: Footsteps.
5. What has keys but can’t open locks? What has space but has no room? What has you but can’t hold you?
   Answer: A keyboard.
6. I am taken from a mine and shut in a wooden case. I’m used by artists who paint with grace. What am I?
   Answer: A paintbrush.
7. I can fly without wings, cry without eyes. Wherever I go, darkness follows me. What am I?
   Answer: Cloud.
8. I have cities but no houses, forests but no trees, and rivers but no water. What am I?
   Answer: A map.
9. I am not alive, but I can grow; I don’t have lungs, but I need air; I don’t have a mouth, but water kills me. What am I?
   Answer: Fire.
10. The more you take, the more you leave behind. What am I?
    Answer: Footsteps.