Middle School Chemistry

Traditionally, combustion consumes oxygen and releases carbon dioxide, but in general, the carbon dioxide released by combustion is consumed by plants and some microorganisms on the earth, and at the same time releases oxygen, so the oxygen and carbon dioxide content on the earth are kept in a relatively stable state. Now the greenhouse effect is mainly caused by the increase in carbon dioxide content, and elevated carbon dioxide is mainly caused by the industrial revolution, a large number of human deforestation and open up the land, while constantly consuming fossil fuels, resulting in the balance of oxygen and carbon dioxide is broken, and caused by.

Combustion does not necessarily consume gases, but most combustion reactions in nature do.

Combustion consumes gases because: combustion is ah a redox reaction, and the most common oxidizing agent in nature is oxygen.