Pencil lead is made up of graphite. These graphite particles stick to the fiber in the paper when you write. So what happens is it transfers from the pencil to the paper. When you write you're literally rubbing the graphite off the pencil.
For water to boil, you need a pot of water and a stove. You put the pot on the stove until the water bubbles, this is called boiling hope this helps lol (:
