Air is used for breathing because it provides the oxygen necessary for our bodies to produce energy.
Here's a more detailed explanation:
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Oxygen Intake: When we inhale, our lungs extract oxygen from the air.
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Oxygen Transport: This oxygen is then transported throughout the body via the bloodstream to all cells.
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Cellular Respiration: Inside our cells, oxygen is used in a process called cellular respiration. This process breaks down glucose (sugar) to create energy that fuels our body's functions.
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Carbon Dioxide Release: As a byproduct of cellular respiration, carbon dioxide is produced.
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Carbon Dioxide Exhalation: The carbon dioxide is transported back to the lungs via the bloodstream and then exhaled.
In essence, breathing is how we get the oxygen we need for energy production and eliminate the waste product (carbon dioxide).
