"Must be the change in the oxygen content," offered Paris.

Well, the lower the oxygen content in the air, the longer you live.

What you're feeling is a change in oxygen content.

The water needs to be below 18 C with high oxygen content.

The oxygen content is so high that he feels a little drunk.

The result is that the oxygen content of the water will be decreased.

These calculations are based on the dissolved oxygen content of water.

The structure of these materials depends on the oxygen content.

With all the vegetation around him, he had expected the oxygen content to be high.

I told him this was because it had a higher oxygen content.