Ever since I was a kid I always wondered how people are not suffocating from staying in their house. Like if all windows are closed how does air get in? Wouldn’t we just breath up all the available air in a matter of hours and die? Same goes for cars too. If I’m on a long road trip and the windows are closed how am I still alive?
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Neither the house nor the car are air tight. Air can get in from outside. So the air you are breathing is replenished from outside.
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