Oxygen makes up only one-fifth of this on the earth NYT crossword answer is:
AIR (3 letters length)The answer for Oxygen makes up only one-fifth of this on the earth crossword clue is listed above to help you solve the puzzle you are currently working on.
Oxygen is an essential element for life on Earth, and it makes up about one-fifth of the atmosphere. This means that it is the most abundant element in the air, and it is necessary for all living things to survive. Oxygen is also important for many industrial processes, such as combustion and respiration. Without oxygen, life on Earth would not exist.