The three main sources of carbon dioxide

Between heaven and earth, all things live, and carbon dioxide is in the atmosphere. There are three sources that cannot be ignored.

First, it comes from all kinds of combustion. The fuel in the world, such as firewood, coal, and oil, all contain carbon. When this fuel is burned in the fire, the carbon combines with the oxygen in the air and reacts violently to produce carbon dioxide. Watchman's stove makes a fire, and the smoke curls, which contains a lot of carbon dioxide; industrial kilns, with a raging fire, when the fuel is burned, a large amount of carbon dioxide is spewed out and entered the atmosphere. As for cars, ships, and planes, powered by fuel, they also expel carbon dioxide into the air during operation. This burning is widely used in life and production, and is a major source of carbon dioxide.

Second, it comes out of the breath of living things. All creatures in the world, whether animals or plants, need to breathe to survive. Animals inhale oxygen and exhale carbon dioxide, which is known to everyone. As one breathes in and out, carbon dioxide comes out with the breath. In the mountains and forests, birds, beasts, insects, fish, thousands of creatures, between breaths, carbon dioxide accumulates. Although plants perform photosynthesis, they absorb carbon and exhale oxygen during the day, and then at night, when there is no light, they also breathe and exhale carbon dioxide. In the vast land, there are many organisms, and the amount of carbon dioxide produced by breathing every day is considerable.

Third, the production of natural processes. Above the earth, the vicissitudes of life, many natural changes, are also the source of carbon dioxide. Volcanoes erupt, ground fires are raging, and hot magma carries a large amount of carbon dioxide out of the surface and into the atmosphere. This is a sudden and violent process. In the soil, microorganisms decompose organic matter and slowly release carbon dioxide. Rivers, lakes and seas, there is material exchange between water bodies and the atmosphere, and dissolved carbon dioxide in water also escapes into the air. These natural processes continue to add carbon dioxide to the atmosphere day after day, year after year.

These three, combustion, biological respiration, and natural processes, are the three main sources of carbon dioxide, and have a profound impact on changes in the earth's atmospheric environment.