Answer:
What is the only letter in the alphabet that does not appear anywhere on the periodic table of elements?
What stays on the ground but never gets dirty?
A word I know, six letters it contains. Subtract just one and twelve remains.
Iron roof, glass walls, burns and burns and never falls.
Be sure to shout for its answers are weak, but there is no language it cannot speak.
People take me on walks and I run and have fun. What am I?