How much oxygen does a person consume in a day?

One of sufficient size would consume oxygen in the local area with extreme efficiency.

At this depth, the mere act of normal conversation consumed oxygen.

Bacteria fed on the waste and consumed so much oxygen that none was left for other species in many parts of the river.

The algae will then die and decompose, consuming oxygen in the process.

Eventually many die, fall to the bottom and are eaten by bacteria in a process that consumes oxygen.

The researchers' aim was simply to measure the amount of oxygen consumed by the camels under various conditions.

Algae consume oxygen in the water, harming fish and other marine life.

Oysters stored in water under refrigeration will open, consume available oxygen, and die.

One explanation for the missing hydrogen is that life forms are consuming it, just as we consume oxygen.