Air Is Made Up of Mostly Nitrogen and This Gas
This page is the CodyCross answer for the clue below from Chile, Group 2293, Puzzle 3 (Chungara Lake).
Question
Air Is Made Up of Mostly Nitrogen and This Gas
Answer
OXYGEN
Word Meaning:
OXYGEN — The chemical element (symbol O) with an atomic number of 8 and relative atomic mass of 15.9994. It is a colorless and odorless gas. Sometimes called elemental oxygen to distinguish it from molecular oxygen.
Definitions from Wiktionary.