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Biology 20 Online
OpenStudy (anonymous):

What is the benefit of having millions of alveoli in your lungs?

OpenStudy (solidicecream):

Increased surface area for exchange of gasses.

OpenStudy (solidicecream):

Also if you think about it, if one alveolus dies then you've still got millions working for you. If you had one big sac and it died then you are dead.

OpenStudy (anonymous):

Thank you!! @SolidIceCream

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