oxygen (n)

In each case, inversion of configuration was demonstrated using thio-substituted non-bridging phosphate oxygens.
Divers rely on tanks of compressed oxygen to explore the depths of the ocean.
High-altitude climbers often carry supplemental oxygen to prevent altitude sickness in thin air.
In medical emergencies, swift administration of oxygen can be a life-saving intervention.
Plants release oxygen during photosynthesis, playing a vital role in supporting life on Earth.