Article in English: Your body uses the oxygen you inhale to react with the proteins, fatty acids, and carbohydrates you ingest. One of the results of this reaction is the carbon dioxide you exhale. In contrast, plants and some forms of bacteria take carbon dioxide from the air and, with energy supplied from sunlight, make simple sugars (which are carbohydrates). Life on Earth is based on the element carbon. To burn something requires a spark, a fuel source, and an atmosphere to burn it in. The oxygen in our atmosphere readily reacts with other substances; put it with burning carbon, and you get carbon dioxide. Calcium oxide (CaO), also known as quicklime, can be produced by burning limestone, which contains calcium carbonate (CaCO3). The CO2 is driven off, leaving the calcium oxide. (For this reason, it is also called burnt lime.) The carbon and oxygen that make up CO2 are found in a number of chemicals and minerals classified as carbonates or, when hydrogen is also present, bicarbonates. Reactions with other chemicals can release CO2 into the air or mix it with water to form carbonic acid (H2CO3). Some of the possible reactions include the following:  Hydrochloric acid and calcium carbonate. Hydrochloric acid (HCl) is the acid found in the human stomach. Calcium carbonate (CaCO3) is found in limestone, chalk, eggshells, pearls, and coral, as well as some antacids. When the two chemicals are mixed, calcium chloride and carbonic acid are formed, and the carbonic acid breaks down into water and carbon dioxide. Vinegar and baking soda. Vinegar is a solution of acetic acid (C2H4O2), while baking soda is sodium bicarbonate (NaHCO3). Mixing them produces water, sodium acetate, and CO2, usually in a foamy reaction. Methane and water vapor. This reaction is performed industrially to extract hydrogen by using steam at high temperatures. The methane (CH4) reacts with the water vapor (H2O) to produce hydrogen (H2) and carbon monoxide (CO), a deadly gas. The carbon monoxide is then mixed with water vapor at lower temperatures to produce...

Summary in Indonesian:
Hembuskan nafas Anda. Bakarlah sesuatu yang mengandung karbon. Campurkan zat-zat kimia yang mengandung karbon.