Gas That Constitutes Almost 80% of Earth's Air

This page is the CodyCross answer for the clue below from Science Lab, Group 310, Puzzle 3 (Basic Oxides).

Question is: Gas That Constitutes Almost 80% of Earth's Air

and the answer is: NITROGEN

Word Meaning:

NITROGEN — (uncountable) The chemical element with an atomic number of 7 and atomic weight of 14.0067. It is a colorless and odorless gas.

Definitions from Wiktionary.

Gas That Constitutes Almost 80% Of Earth's Air - Science Lab CodyCross Answers | CodyCross Solutions