Inhaling and Exhaling
This page is the CodyCross answer for the clue below from Underground Worlds, Group 2164, Puzzle 2 (Stalactites).
Question is: Inhaling and Exhaling
and the answer is: BREATHING
Word Meaning:
BREATHING — verbal noun of breathe: (uncountable) The act of respiration; (countable) a single instance of this.
Definitions from Wiktionary.