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aerate	to fill or charge (a liquid) with a gas, esp. carbon dioxide. [1/3 definitions]
asphyxia	a lack of oxygen or excess of carbon dioxide in the lungs that results in suffocation.
baking powder	a powder containing sodium bicarbonate and an acidic substance, that serves as a leavening agent in baking by releasing carbon dioxide when mixed with water, thereby causing the dough to rise.
biogas	any gaseous fuel produced by the bacterial decomposition of organic matter, composed primarily of methane and carbon dioxide.
blackdamp	a suffocating gas composed of carbon dioxide and nitrogen, found as a residue of fires and explosions of combustible gases in mines; chokedamp.
carbon	a chemical element that has six protons in each nucleus and that occurs in pure forms as diamond and graphite, or in a large variety of compounds such as carbon dioxide, carbohydrates, and petroleum hydrocarbons. (symbol: C) [1/7 definitions]
carbonate	to infuse or charge with carbon dioxide, as soft drinks or soda water. [1/3 definitions]
carbonated	of or pertaining to water infused with carbon dioxide gas (used esp. in reference to carbonated beverages).
carbonation	infusion of water with carbon dioxide gas.
carbon dioxide	a gas without color or odor that is made up of carbon and oxygen. Carbon dioxide is in the air and is used in soft drinks. Frozen carbon dioxide is called dry ice.
carbon footprint	the total amount of carbon dioxide and other greenhouse gases produced by a single person, organization, product, or process.
carbonic acid	a weak colorless unstable acid, present only in solution, formed by dissolving carbon dioxide in water.
carbon-neutral	of or pertaining to a state in which no net carbon dioxide is added to the atmosphere.
chokedamp	an atmosphere very low in oxygen and high in carbon dioxide that sometimes occurs in deep mines and causes miners to choke; blackdamp.
climate change	a major change in Earth's climate that is of current concern and which is associated with an increase in carbon dioxide and certain other gases in Earth's atmosphere. These gases contribute to the increasing temperature of the planet. [1/2 definitions]
CO2	abbreviation of "carbon dioxide," a colorless, odorless, incombustible gas that is produced naturally in breathing, combustion, and decomposition, and commercially for use in dry ice, fire extinguishers, and carbonated beverages.
decarbonate	to remove carbon dioxide gas or bubbles from.
decarboxylate	to remove a carbonyl group from (an organic compound), resulting in the emission of carbon dioxide.
Dry Ice	trademark for solidified carbon dioxide that evaporates as a gas at a very low temperature without passing through a liquid phase, used as a refrigerant.
external respiration	the exchange of carbon dioxide and oxygen across external or respiratory surfaces, such as gills, in multicellular organisms.
greenhouse effect	the warming of the earth's surface and lower atmosphere that is caused by reflected sunlight being trapped by certain gasses that are emitted on earth. Light from the sun travels through space and enters earth's atmosphere, naturally warming the planet and making it possible for humans to live on it. Once sunlight hits the earth, though, it bounces back into space. If it did not go back into space, the earth would be too hot to live on. Gases such as carbon dioxide and methane that are sent into the air from earth are capable of trapping sunlight that should return to space. The warmth created by the trapped sunlight is called the greenhouse effect. The greenhouse effect can be seen on other planets in the universe if gases emitted from the planet trap light from a star.

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