Riddle: While I am in air I am not in oxygen.
I am also in water but not in hydrogen.
I am necessary in all animals but you won't find me at the zoo. look in all brains and you'll find me there too'

What am I
Answer: The Letter A
Who Iam I Riddle Meme.
Who Iam I Riddle Meme.
Some Fun Father's Day Riddles to share with your dad on his special day... Happy Father's Day! Print or download Riddles PDF's.
Take the School Riddles quiz! A collection of riddles with a school theme. Great for the playground or classroom. Print or download.
Word play riddles. The best riddles about words. Nobody has a better collection of word play riddles. A tremendous riddle quiz. Historic! Enjoy! Download or print!