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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In a house or car, oxygen is constantly being replenished through the process of ventilation. This is the process of allowing fresh air from outside to enter the building or vehicle, and allowing stale air inside to escape.
In a house, this is typically done through windows, doors, and vents. The windows and doors can be opened to let fresh air in, and the vents can be used to circulate the air throughout the house. In a car, fresh air is typically drawn in through the car’s ventilation system, which uses fans to blow air into the car and circulate it throughout the cabin.
In both cases, the fresh air that enters the building or vehicle contains oxygen, which is then breathed in by the people and animals inside. As they breathe out, they release carbon dioxide, which is then expelled from the building or vehicle through the ventilation system. This process helps to maintain a healthy supply of oxygen inside the house or car.
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