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===Meaning===
[[Alveoli]] are small air sacs in the [[lungs]] which are specially [[Adaptation|adapted]] for gas exchange.
===Adaptations of Alveoli===
{| class="wikitable"
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|[[File:AirSacs.png|center|400px]]
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| style="height:20px; width:400px; text-align:center;" |The percentage of different gases found in [[inhale]]d air.
|}