The answer to that question is complicated by the fact that human activity is not the only factor affecting the amount of carbon dioxide in the atmosphere. Plants, both on land and in the oceans, continually absorb and release large amounts of carbon dioxide. Plants absorb carbon dioxide when they grow and release carbon dioxide as they decay. Forest fires, volcanoes, droughts and other natural phenomena can affect the natural rate of carbon dioxide uptake and release.

CO2 lifetime in the atmosphere can range from 50-200 years. Once it enters the atmosphere, there is very little that can be done to reduce carbon dioxide in the atmosphere.

One of the strongest pieces of evidence for human-induced climate change is the consistent rise in carbon dioxide (CO2) in modern times, as measured at the Mauna Loa Observatory in Hawaii, where CO2 has been observed since 1958. As of 2005, the concentration of CO2 in Earth’s atmosphere was about 378 parts per million (ppm).

Carbon dioxide is believed to cause global warming. Others feel that global warming is a natural cycle.

If we start with 1000 cubic feet of natural gas (and assuming it is pure methane or CH4) at STP (standard temperature and pressure, i.e., temperature of 273°K = 0°C = 32°F and pressure of 1 atm = 14.7 psia = 760 torr), and burn it completely, here's what we come up with: Since 1 mole of a gas occupies 22.4 L at STP, 28316.85 L of CH4 contains 28316.85/22.4 = 1264.145 moles of CH4 (each mole of CH4 = approx. 16 g) One mole of CO2 has a mass of approx. 44 g, so 1264.

Presently, according to the IPCC and its range of possible scenarios, atmospheric carbon dioxide could double as soon as 2050. [4] Among other things, this could result in more destructive storms, flooding, ice cap melting, and rising sea levels.

Carbon dioxide, a waste product of respiration, is normally present in body tissues. Blood carries carbon dioxide from the body tissues to the lungs, where it is exhaled (and where the blood is reoxygenated from fresh, inhaled air). According to the text “Biology” by Claude A. Villee (copyrighted 1957 by W.B. Saunders Company, Philadelphia and London), each liter of blood transports about 50 milliliters of blood from body tissues to the alveoli of the lungs.

Carbon dioxide is a by-product of many natural processes on Earth. However, these processes cannot explain the rise in carbon dioxide levels that we have measured over the past several decades. For example, natural decay of plant matter releases CO2 into the atmosphere, but averaged over a year this is almost exactly cancelled by removal of CO2 by plants as they photosynthesize and grow.

Yes.Therapeutic laser treatment with carbon dioxide lasers has become more and more popular. This does not require instruments expressly designed for that purpose. Practically any carbon dioxide laser can be used as long as the beam can be spread out over an appropriate area, and as long as the power can be regulated to avoid burning. This can always be achieved with an additional lens of germanium or zinc selenide, if it cannot be done with the standard accessories accompanying the apparatus.

Humans exhale about 1 kg of carbon dioxide per day (http://cdiac.esd.ornl.gov/pns/faq.html). The exact amount depends on age, sex, size, and most importantly activity level. Multiply that by a world population of six billion and you get a very large number. However, human exhalation of carbon dioxide is part of a closed system.

Several experiments have shown that the rate of carbon dioxide uptake in certain species of plants does increase with increased ambient carbon dioxide concentrations. However, many scientists and climatologists believe that increased atmospheric greenhouse gas concentrations will cause increased occurrence of droughts, floods, and other extreme weather events which would disrupt plant growth and counter any positive uptake effects from atmospheric carbon dioxide concentrations.

The gas that humans and animals breathe out and that plants use during photosynthesis to produce oxygen.

Supercritical fluid extraction has emerged as an attractive separation technique for the food and pharmaceutical industries due to a growing demand for "natural" processes that do not introduce any residual organic chemicals. Supercritical carbon dioxide is by far the most commonly used supercritical fluid.

The use of fossil fuel currently accounts for between 70 and 90% of all human emissions of carbon dioxide. Fossil fuels are used for transportation, manufacturing, heating, cooling, electricity generation, and other applications. The remainder of the carbon dioxide emissions comes from human land use activities -- ranching, agriculture and the clearing and degradation of forests.

There has been no scientific data to prove that these machines collect enough mosquitoes to make any significant reduction in the mosquito population. Carbon dioxide is only one of the chemicals that attract female mosquitoes. They are also very sensitive to other chemicals, such as hormones and amino acids. Some people claim the carbon dioxide attracts more mosquitoes to a specific area, potentially increasing the population.

The Program Developed for CO2 System Calculations (ORNL/CDIAC-105), recently released by Ernie Lewis, Department of Applied Science, Brookhaven National Laboratory, and Doug Wallace, Abteilung Meereschemie, Institut fuer Meereskunde, was developed to help calculate inorganic carbon speciation in seawater.

The properties which make supercritical carbon dioxide an attractive solvent for extraction also apply to its use as a medium for reaction chemistry. A fluid's most important physical and transport properties that influence the kinetics of a chemical reaction are intermediate between those of a liquid and a gas in the supercritical carbon dioxide. The reactants and the supercritical carbon dioxide frequently form a single supercritical fluid phase.

Various types of pumps can be used for supercritical fluid applications. For medium to large volume processes, a pneumatic booster pump is most often used. A diaphragm pushes against a piston to compress the liquid carbon dioxide to a set pressure point. The air that drives the pump increases the liquid carbon dioxide pressure (boosts) in a ratio of about 100 to 1. So for every 1 psi of air delivered to the pump, the carbon dioxide pressure is boosted by 100 psi. (i.e. Air at 50 psi.

The Program Developed for CO2 System Calculations (ORNL/CDIAC-105), recently released by Ernie Lewis, Department of Applied Science, Brookhaven National Laboratory, and Doug Wallace, Abteilung Meereschemie, Institut fuer Meereskunde, was developed to help calculate inorganic carbon speciation in seawater.

Carbon dioxide is widely believed to contribute to global warming. Carbon dioxide traps heat from the sun and does not allow it to escape back into space from which it came. While a certain quantity of carbon dioxide in the atmosphere is necessary for the maintenance of life on Earth, increased levels may cause the polar ice caps to melt, rising sea levels, more severe storms, and other deleterious environmental impacts. Carbon dioxide is emitted when fossil fuels are burned.

Carbon dioxide comes from a mixture of natural and man-made (anthropogenic) sources. The primary source of man-made CO2 emissions comes from the burning of fossil fuels (oil, natural gas, and coal) for energy production in the transportation, industrial, commercial, and residential sectors.

Carbon dioxide (CO2) is a non-poisonous gas emitted when fossil fuels (carbon containing fuels e.g. oil, gas, coal) are burnt. It is the principle cause of human induced global warming.

A 1,300-kilowatt mill generates the electric energy consumed during the course of a year by one thousand homes, which is he equivalent to saving two thousand barrels of oil and avoiding emitting three thousand tonnes of carbon dioxide. The power installed in Galicia by 2010 is estimated at 6,500 MW, which means an annual saving of 28.4 million barrels of petrol and, 715 million Euro for the Spanish economy.

It depends. View references of papers relating to forest management, biomass fuels, and CO2 emissions to the atmosphere. [GM] See new document, Answers to ten frequently asked questions about bioenergy, carbon sinks and their role in global climate change, by Robert Matthews and Kimberly Robertson, prepared as part of IEA Bioenergy Task 38 (Greenhouse Gas Balances of Biomass and Bioenergy Systems).

Answer: While the levels of carbon dioxide in cell culture systems vary from that in ambient air (about 0.03%) up to 40% in air, generally either no added CO2 or 5% to 10% CO2 in air are the most frequently used. It is very important to adjust the concentration of sodium bicarbonate used in a medium to that required for equilibration with the level of CO2 used in the gas phase. Cells in culture produce CO2 and require small amounts of the compound for growth and survival.