Carbon dioxide what is it

Carbon monoxide, a dangerous pollutant, eventually oxidizes to carbon dioxide. Small canisters containing pressurized CO 2 are used to inflate bicycle tires and life jackets and to power paintball guns. The "fizz" in soda pop is supplied by carbon dioxide. Carbon dioxide is also released by yeast during fermentation, giving beer its head and making champagne bubbly. Because it is not flammable, CO 2 is used in some fire extinguishers. Carbon dioxide forms a weak acid, called carbonic acid H 2 CO 3 , when dissolved in water.

Carbon dioxide is the most abundant gas in the atmospheres of Mars and Venus. Solid, frozen carbon dioxide is called "dry ice". The polar ice caps of Mars are a mixture of normal water ice and dry ice. Since humans and animals depend on plants for food, photosynthesis is necessary for the survival of life on earth. You have probably heard of CO 2 emissions in the news regarding global warming.

Indoor carbon dioxide concentrations are driven by a combination of outdoor CO 2 , indoor breathing and the ventilation rate of the building. As buildings and homes become more energy-efficient and airtight, this means we have less fresh air. Many of the ventilation systems we use today recycle air to conserve energy, essentially moving the contaminated air around rather than cycling in new air.

This results in high CO 2 concentrations and poor indoor air quality. High levels are directly correlated to low productivity and high sick leave making this a crucial concern in offices, schools and home environments.

The overall color of the map shifts toward the red with advancing time due to the annual increase of CO 2. Images of Change. Explore a stunning gallery of before-and-after images of Earth from land and space that reveal our home planet in a state of flux.

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