What is most important air or water?

Both are needed to live.

Air. If you judge it on how long you can survive without one, air is the winner by far, and to be honest that's all I see in this question. If the question was quality of air or quality of water then it would be a lot bigger of a discussion.

You do not say for what. For terrestrial animals both are necessary. We humans require BOTH. You cannot say it is a case of one or the other. If you wanted to know which you could survive without for the shortest period of time it is air. Cut off your air supply for a number of minutes and you are dead. You could survive days without water.

How long can you hold your breath? How long can you go without a drink of water? (unless you're one of those people who have to carry a bottle around like a life support system).

Got it?

Both are important , Breathing air is required in every minute, so more important than air.

both important,we all need it in our life

Air. Without air you are dead in a few minutes,without water you can live for a few days.

Without air, you'll die in minutes. Without water, you'll die in days.

Meanwhile let me just fix your sentence to internationally recognised standards:

Which is more important: air or water?

Short term, air, but you need both to survive.

The top 5 most important nutrients needed by the body are (in order), oxygen, water, salt, magnesium, and potassium - followed by calcium and the amino acids. These 5 are the most important because they're the main ones that maintain healthy cells.