Dissolved Oxygen

Dissolved Oxygen Background Information

The atmosphere we breathe is 21% oxygen
The air that we breathe every second of every day is composed of 21% molecular oxygen gas (O2). This means that about one out of every five molecules in the atmosphere is an oxygen molecule (particle).

Approximately 75% of the atmospheric oxygen is produced by one-celled plants (phytoplankton) floating in the oceans. Oxygen is required by all living things, as well as the processes of combustion (burning) and oxidation (rusting of iron).

What then, is dissolved oxygen? Click below to learn more!

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