trees. Trees produce oxygen and in return we give them Co2 (carbon dioxide).
Yes they are; diatoms are the main source of oxygen in the universe.
oxygen is a molecule
The source of Oxygen is the Carbondioxide in the air.
The source of oxygen in home treatment is typically an oxygen concentrator or compressed oxygen cylinder. These devices deliver medical-grade oxygen to individuals who require supplemental oxygen therapy to help them breathe more easily.
The source of oxygen in photosynthesis in plants is water. During the light-dependent reactions of photosynthesis, water molecules are split into oxygen, protons, and electrons. The oxygen is released into the atmosphere as a byproduct of this process.
Whether in home or hospital, plastic tubing connects the oxygen source to the patient.
Plants.
The oxygen in water is the oxygen that is released into the atmosphere.
The oxygen content of a river or stream is likely to be highest at the source. The source of the river or stream is where it originates.
Why is humidity added to the oxygen source before it is breathed by the client
A source of heat, a source of fuel, and oxygen.
the air