Riddle GameOnline version Guess the correct word! by Tanner 1 Born of fossils, refined with care, I hide in tanks and fuel the air. I shift my form when pressure’s right, And vanish clean in steady light. No color, scentless on my own— Yet warnings guard the flame I’ve shown. From grills to homes, I play my part— Contained, controlled, a fiery art. What am I?