The source of carbon dioxide in the room
The source of carbon dioxide in the room is abundant. In the room, between people and breath, the exhalation is carbon dioxide. Each person, day and night, although the amount is different, the accumulation is more.

Furthermore, the source of fire is also the source. If a candle burns in the room, a firewood fire, or another kind of fuel burns, all produce carbon dioxide. And if there are various appliances in the room that are driven by fuel, they also exhale this gas when they are operating.

Also, all kinds of green plants, although photosynthetic during the day and absorb carbon dioxide, breathe at night, and reverse the day, and also spit carbon dioxide into the room. Although green plants are many beneficial, they also have this side in the production of carbon dioxide.

Therefore, if you want to know the source of carbon dioxide in the room, you should carefully observe the breath of people, the state of burning matter, the transportation of utensils, and the breath of green plants in order to obtain its details, so as to adjust the atmosphere of the room.