X is usually representing time so years, days, etc
Um to my best knowledge I believe it is the carbonated water
Answer: i think the 3,4,2
Explanation:
Answer: Fire requires oxygen to burn. Water "smothers" fire and prevents it from acquiring more oxygen. Fire also requires heat, which cool water may prevent/remove.
Cover with metal .Any elements other than hydrozen and helium concentration shows an absorbance
