Top Answer
User Avatar
Wiki User
Answered 2010-01-03 06:40:25

On average less than 1%. It is estimated that volcanoes emit on average 200 million tonnes of CO2 a year. This includes all volcanoes, hot springs and and undersea hydrothermal vents. Humans emit 26 billion tonnes (2003) a year by burning fossil fuels. The gas burnt onsite at oil wells in gas flares accounts for more CO2 emissions than all volcanoes put together.

User Avatar

Your Answer


Still Have Questions?

Related Questions

Does the amount of sugar effect the amount of CO2 that is produced during fermentation?


What is the reaction when baking soda and vinegar are mixed?

Carbon dioxide is produced. The amount of baking soda to vinegar control the amount of CO2 that is produced.

What is the amount of CO2 produced on burning 12g of carbon in air is?

44 grams of CO2 (1 mol CO2 from 1 mol C if enough oxygen, air, is available)

Why is so much CO2 produced in the body?

the more energy produced the more CO2 is produced

What percentage of the world's carbon dioxide emissions are man-made ie in relation to emissions from the sea rotting vegetation and volcanoes?

Carbon dioxide (CO2) from the sea, vegetation and volcanoes are all part of the natural carbon cycle, which moves CO2 in and out of the atmosphere. Man-made emissions are largely from burning of fossil fuels (coal, oil and natural gas). This carbon has been stored away underground for millions of years and is not removed from the atmosphere by the carbon cycle.In comparison to just volcanoes, the emission of carbon dioxide by human activity compared to volcanoes has us producing about 130 times more than volcanoes. Scientists calculated that volcanoes produce about 130-230 million tonnes of CO2 each year (Gerlach, 1999, 1991) compared to 27 billion tonnes produced by human activity (Marland, et al., 2006).

Where is the CO2 that has outgassed from Earth's volcanoes?

In the atmosphere.

How can you stop volcanoes from letting off CO2?

No. There is no way of stopping volcanoes from releasing anything.

Do volcanoes spew CO2?

Yes. Carbon dioxide is among the gasses emitted by volcanoes.

When 85.0 g of CH4 are mixed with 160 g of O2 what is the maximum amount of CO2 that can be produced?

5.0 moles

How is carbon dioxide produced in the air?

Carbon dioxide is not produced in the air. It is produced on the ground, largely by the oxidation reduction (burning) of carbon rich organic matter, like forest fires. Animal exhalations and plant decay are other sources of carbon dioxide release. Saccharomyces, for example, digests maltose and fructose sugars and emits ethyl alcohol and carbon dioxide as byproducts. A small amount of CO2 is vented from underground by volcanoes and fumaroles. In more recent years CO2 emissions from human activity have begun to exceed those of natural sources, such as the burning of coal to produce electricity and automobile exhaust. Today humans emit about 100 times the amount of CO2 produced from within the earth.

Why does CO2 happen?

CO2 (carbon dioxide) is produced when plants or animals oxidize carbon compounds to produce metabolic energy, when carbon compounds are burned, or it can be released by volcanoes, or when acids contact carbonate rocks. In th case of respiration or fire the reaction is C+O2 -->CO2

Which is a product of cellular respiration?

CO2ATp is produced mainly. Water and CO2 produced during respiration

How many co2 molecules are produced in the cytoplasm in the end of glycosis?

The number is zero.No CO2 is produced in glycolisis.

How do volcanoes benefit the ecosystem?

They provide CO2 for the ecosystem. Plants of course, need CO2 for photosynthesis.

What produces more co2 than humans?

Volcanoes produce thousands of tons of CO2 when they erupt.

What process releases CO2 to the atmosphere by volcanoes?


How is CO2 produced?

Most CO2 is produced through rotting vegetation or other natural processes. Man produces CO2 through the burning of fuels.

What Is produced when limewater turns milky?

CO2 is produced.

The sample is not completely thermally decomposed in the procedure will the mole ratio of CaO To CO2 be too high or too low. explain?

The mole ratio of the sample will be too high. This is because the amount of CO2 will be lower than if the reaction went all the way and produced the proper amount of CO2.

Amount of CO2 dissolved in different softdrinks?


What Active volcanoes are added to the early Earths atmosphere?

There are smallamount of volcanoes. They emit so2 and co2 gases.

What volcanic gas is released the most by volcanoes?

Volcanoes release H2S, HCl, SO2, CO2, etc.

What percentage of CO2 emissions are caused by commercial airliners?

Man produces roughly 6% of all global CO2 production. Just over half of all CO2 produced by man is to heat and power homes. Another very large chuck is created by automobiles. The amount of total CO2 produced by aircraft, including small aircraft would be in the fractions of a percent.

Does human activity emit more CO2 than volcanoes?

Yes, man emits more CO2 than volcanoes. Over the last 50 years, emissions from volcanoes are measured at less than 1% of those generated by human activities. The chemical signatures of CO2 emitted by volcanoes is different than that by the burning of fossil fuels and they are readily distinguishable by measurement.

What carbon dioxide is produced by planes?

Carbon dioxide (CO2) is produced by planes because CO2 is a result of the fuel burning.