Air is about 30% oxygen 70% nitrogen.
If you are in an oxygen tent or some other place with pure O2, breathing will be easier, but things will also burn easier.
Normal air is 20% oxygen, 79% nitrogen, and 1% other gasses.
Air is approximately 80% Nitrogen, 19% oxygen and 1% others
burns faster in pure oxygen as the percentage of oxygen is less in air
Aerobic means with oxygen/air. Anaerobic means without oxygen/air.
Their is recycled air in the carbon dioxide and oxygen cycle and no recycled air in the carbon cycle.
Aerobic means with oxygen/air. Anaerobic means without oxygen/air.
Air is approximately 80% Nitrogen, 19% oxygen and 1% others
Without different gases there will be no air, if there is air, how can oxygen travel?
Oxygen is not a mixture, it is a pure element. Air, however, is a mixture of many different elements. In other words, oxygen only has oxygen in it. Air has oxygen, nitrogen, carbon, hydrogen, and other elements in it.
The air you breathe out is little changed from the air you breathe in, except that the oxygen content is somewhat lower - your body extracts some (not all) of the oxygen. The exhaled air is the same except for slightly lowered oxygen content.
The structure in the lungs responsible for exchanging oxygen and carbon dioxide between the blood and the air is called the alveoli.
Ingenhousz demonstrated that oxygen (dephlogisticated air) was produced during photosynthesis by showing that plants release this gas in the presence of light. This was different from fixed air (carbon dioxide) because plants were observed to only release oxygen in the light, suggesting a direct relationship between the presence of light and the production of oxygen.