'It's no secret--the name of this element that makes up a tiny fraction of the atmosphere is from the Greek for "hidden"'
krypton
IT'S ELEMENTARY: Its no secret--the name of this element that makes up a tiny fraction of the atmosphere is from the Greek for hidden
It's no secret--the name of this element that makes up a tiny fraction of the atmosphere is from the Greek for "hidden"
It's no secret--the name of this element that makes up a tiny fraction of the atmosphere is from the Greek for "hidden"
IT'S ELEMENTARY
krypton
IT'S ELEMENTARY