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How can biofuel production increase carbon dioxide levels?
Biofuel production does not increase carbon dioxide levels. Biofuel comes from recently grown vegetation of many kinds. When the vegetation grew earlier in the season it took carbon dioxide out of the air. When the biofuel is extracted and burnt that same carbon dioxide is released into the air again. There is no increase of carbon dioxide. Biofuel is carbon neutral. This is the problem with fossil fuels, who took carbon from the air many millions of years ago. Suddenly releasing this now is adding to the greenhouse gas levels and causing global warming.
How does burning affect the levels of carbon dioxide in the atmosphere?
Burning anything releases carbon dioxide, a greenhouse gas, as most things are largely made of carbon. Burning vegetation is really part of the carbon cycle, but burning of fossil fuels (coal, oil and natural gas) in industry, transport and the generation of electricity, releases carbon dioxide that has been sequestered underground for 300 million years. This is why carbon dioxide levels are increasing in the atmosphere.
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.
What are the levels of carbon dioxide from past to present?
During the past 500,000 years, levels of carbon dioxide in the atmosphere never rose above 300 ppm (parts per million) or 0.03%. Since the Industrial Revolution, 200 years ago, when we began burning coal, levels have risen to their present (2013) levels of 400 ppm (parts per million) or 0.04%.
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 has the percentage of carbon dioxide changed in the last 4500 million years?
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Starting billions of years ago algae lowered the levels in the atmosphere?
Carbon Dioxide
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.
In past years were temperature and carbon dioxide usually at the same rate?
Yes, carbon dioxide levels remained at 280 ppm for many thousands of years, together with an even temperature, before the Industrial Revolution.
When you burn vegetation how does it affect carbon dioxide levels in the atmosphere?
Burning vegetation adds to the carbon dioxide levels in the atmosphere. However, that carbon dioxide was recently removed from the air when the plants were growing, so burning vegetation is carbon neutral.Burning fossil fuels (coal, oil and natural gas), of course, releases extra carbon dioxide that has been hidden away for 300 million years.
How can biofuel production increase carbon dioxide levels?
Biofuel production does not increase carbon dioxide levels. Biofuel comes from recently grown vegetation of many kinds. When the vegetation grew earlier in the season it took carbon dioxide out of the air. When the biofuel is extracted and burnt that same carbon dioxide is released into the air again. There is no increase of carbon dioxide. Biofuel is carbon neutral. This is the problem with fossil fuels, who took carbon from the air many millions of years ago. Suddenly releasing this now is adding to the greenhouse gas levels and causing global warming.
Has atmospheres carbon dioxide changed over last 150 years?
Over the last 150 years, carbon dioxide (CO2) concentrations have risen from 280 to nearly 380 parts per million (ppm).
What was the amount of carbon dioxide between the years 1000 and 1800?
Carbon dioxide levels in the atmosphere between 1000 and 1800 were steady around 280 ppm (parts per million). Levels now (2013) are approaching 400 ppm.
How does burning affect the levels of carbon dioxide in the atmosphere?
Burning anything releases carbon dioxide, a greenhouse gas, as most things are largely made of carbon. Burning vegetation is really part of the carbon cycle, but burning of fossil fuels (coal, oil and natural gas) in industry, transport and the generation of electricity, releases carbon dioxide that has been sequestered underground for 300 million years. This is why carbon dioxide levels are increasing in the atmosphere.
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.
How much carbon dioxide was in the air 100 years ago?
Carbon dioxide levels in the atmosphere in 1910 were around 290 ppm (parts per million). They are now approaching 400 ppm.
Why have carbon dioxide levels in the earth fallen?
Carbon dioxide levels have not fallen. They have been gradually increasing for the past 250 years when man began burning fossil fuels and cutting down trees. Since 1980 CO2 levels have increased more rapidly than ever before.
