Naturally Occurring Chemical Used as Poison
This page is the CodyCross answer for the clue below from Futuristic City , Group 996, Puzzle 2 (Carbon Dioxide Catcher).
Question is: Naturally Occurring Chemical Used as Poison
and the answer is: ARSENIC
Word Meaning:
ARSENIC — A toxic grey brittle nonmetallic chemical element (symbol As) with an atomic number of 33.
Definitions from Wiktionary.