We take about 20,000 breaths daily. Each breath is roughly 0.5 litres. Multiplying these gives an estimate of 10,000 litres of air breathed in one day, which is a reasonable, approximate and useful figure.
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We take about 20,000 breaths daily. Each breath is roughly 0.5 litres. Multiplying these gives an estimate of 10,000 litres of air breathed in one day, which is a reasonable, approximate and useful figure.