3B: Find out why we need to breathe and how we manage to do it. Air moves in and out of our lungs throughout the day and while we're sleeping. Find out how we control this important process.
3B: Find out why we need to breathe and how we manage to do it. Air moves in and out of our lungs throughout the day and while we're sleeping. Find out how we control this important process.
About Khan Academy: Khan Academy is an organization on a mission. Khan Academy is a not-for-profit with the goal of changing education for the better by providing a free world-class education for anyone anywhere.
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Khan Academy is a non-profit educational organization created in 2006 by educator Salman Khan to provide 'a free, world-class education for anyone, anywhere.'