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What has the level of carbon dioxide done in the last hundred years?
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How common is carbon dioxide in the air?
Levels of carbon dioxide in the air reached 400 ppm (parts per million) or 0.04% this year (2013). This is the highest level in the past 500,000 years.
Why has the carbon dioxide level of the atmosphere been rising for more then 150 years?
Because we began burning coal at the start of the Industrial Revolution.
What causes carbon dioxide to level in the atmosphere?
Levels of carbon dioxide are maintained when the amount of carbon dioxide being absorbed by the oceans and plant life equals the amount of carbon dioxide created by all natural and man made sources. When these sources exceed the ability to absorb, the levels go up. The major threat to this equilibrium is, of course, the burning of fossil fuels (coal, oil and natural gas), which releases carbon dioxide hidden away for millions of years.
What might decrease global atmospheric carbon dioxide?
There is no known way that humans can economically remove carbon dioxide from the atmosphere; all we can really do is reduce our emissions of carbon dioxide and slow down the rate at which atmospheric carbon dioxide levels are increasing. The surface waters of the ocean do absorb some carbon dioxide from the atmosphere as atmospheric carbon dioxide level increase, but there is little interchange betwen the warm upper ocean and the deep layers. However over a period of several thousand years, there is sufficient interchange to absorb large volumes of carbon dioxide, allowing the atmospheric concentration to return more or less to normal. Afforestation. Planting trees will remove carbon dioxide from the atmosphere.
Was there more carbon dioxide in the air 2000 years ago?
No. Carbon dioxide levels in the atmosphere 2000 years ago were around 280 ppm (parts per million) and remained around that level till about 1800, when we started burning coal. Levels now (2013) are approaching 400 ppm.
How common is carbon dioxide in the air?
Levels of carbon dioxide in the air reached 400 ppm (parts per million) or 0.04% this year (2013). This is the highest level in the past 500,000 years.
Starting billions of years ago algae lowered the levels in the atmosphere?
Carbon Dioxide
How many years to recycle carbon dioxide?
None. Plants recycle carbon dioxide continuously.
What was the carbon dioxide level in the world fifty years ago?
Carbon dioxide levels in the atmosphere in 1960 were around 315 ppm (parts per million). Levels now (2013) are approaching 400 ppm.
Why does fresh air contain almost no carbon dioxide?
Fresh air contains just as much carbon dioxide as the whole atmosphere, that is, about 400 ppm (parts per million). This is 0.04%, but is enough to cause serious global warming. Two hundred years ago the carbon dioxide levels were 280 ppm, so the rate is increasing fast.
Why has the carbon dioxide level of the atmosphere been rising for more then 150 years?
Because we began burning coal at the start of the Industrial Revolution.
What causes carbon dioxide to level in the atmosphere?
Levels of carbon dioxide are maintained when the amount of carbon dioxide being absorbed by the oceans and plant life equals the amount of carbon dioxide created by all natural and man made sources. When these sources exceed the ability to absorb, the levels go up. The major threat to this equilibrium is, of course, the burning of fossil fuels (coal, oil and natural gas), which releases carbon dioxide hidden away for millions of years.
How does the level of carbon dioxide change?
Levels of carbon dioxide are changing in the atmosphere because of the burning of fossil fuels (coal, oil and natural gas) in industry, transport and the generation of electricity. This year (2013) carbon dioxide levels in the atmosphere reached 400 ppm. At the beginning of the Industrial Revolution they had been 280 ppm for thousands of years.
What element transformed carbon dioxide atmosphere a billion years ago to what you breathe?
Oxygen is the element that transformed Carbon Dioxide atmosphere a billion years ago to what you breathe.
What might decrease global atmospheric carbon dioxide?
There is no known way that humans can economically remove carbon dioxide from the atmosphere; all we can really do is reduce our emissions of carbon dioxide and slow down the rate at which atmospheric carbon dioxide levels are increasing. The surface waters of the ocean do absorb some carbon dioxide from the atmosphere as atmospheric carbon dioxide level increase, but there is little interchange betwen the warm upper ocean and the deep layers. However over a period of several thousand years, there is sufficient interchange to absorb large volumes of carbon dioxide, allowing the atmospheric concentration to return more or less to normal. Afforestation. Planting trees will remove carbon dioxide from the atmosphere.
Was there more carbon dioxide in the air 2000 years ago?
No. Carbon dioxide levels in the atmosphere 2000 years ago were around 280 ppm (parts per million) and remained around that level till about 1800, when we started burning coal. Levels now (2013) are approaching 400 ppm.
What influence have humans had on the quantity of carbon dioxide in the atmosphere and oceans in the past two hundred years?
From the start of the Industrial Revolution we have been digging up and burning fossil fuels (coal, oil and natural gas). This burning releases carbon dioxide which has been hidden away for 300 million years, so its emission adds to the levels in the atmosphere.
