What is the source of oxygen gas in air?

More Questions

• What is the importance of oxygen gas dissolved in water?
• What are the natural source of air pollution?
• What are the natural sources of air pollution?
• Why is warm air lighter than cold air?
• What is real gas and ideal gas?
• What would happen if there is no air in water?
• Why is diffusion insufficient to meet the oxygen?
• Why is air a mixture and not a compound?
• What is offshore and onshore in oil and gas?
• What are the sources of public revenue?