How much of the CO2 green house gas emissions comes directly from humans?

Question

We've all heard how many millions of tons of CO2 are emitted from cars, coal fired power plants, etc. With more than 6 billion people on earth, each one a CO2 emitting machine I am curious how much of the green house gas comes directly from the byproduct of human metabolism.

Answer 1

From a average 2 parent 2 children household each year 50 tons or more is dropped in the atmosphere. So multiply that by the 122 million households there are, and there is your answer.

Answer 2

Everyone is so worried about global warming and destroying the earth, The honest truth is that man does not have the technology to actually destroy the earth, yet. We may however have the ability to destroy ourselves.
The truth is, that man is a very insignificant CO2 producer on this planet. In July 2001, the Mayon volcano in the Philippines erupted, spewing more CO2 in one eruption than man kind has in its entire history (it has had 47 major eruptions in the past), and the annual Co2 emissions from Yellowstone national park is 370,000,000,000 metric tons per year and rising.
Although volcanos are a major CO2 contributor, they cannot compare to the amount leached out from other more constant CO2 emitters. To give you a hint, the average extinct volcano has an emission rate of 7 metric tons per day.

Global warming is very real, but people are not even close to being the primary contributor of CO2 gasses. And the fact is, it will be impossible to stop Man's rising need for fuel. Even if the western world stops all burning of fossil fuels, The third world will not, and countries like China, will never respond to our requests.

Good luck convincing the liberal minded people, like teachers and professors, that believe that man is causing global warming. I hope you have the intelligence to research more about our global climate change, and its true causes.

Never believe AL GORE, he is selling a scam.

If you want to help, Plant a forest of trees.

Answer 3

To give some perspective, plant respiration puts 60 gigatonnes of CO2 in the atmosphere each year. Fossil fuel burning and concrete production puts 5.5 gigatonnes. 90 gigatoones is released by the oceans. 60 gigatonnes comes from decaying vegetation and soil.

Of course, what matters more is what happens to this CO2. Some dissolves back into the oceans. Some is absorbed by plant photosynthesis etc.

Of note is that ocean release of CO2 is very temperature sensitive, so you would expect a warming climate to result in higher CO2 in the atmosphere regardless of whether CO2 caused the warming or not.

Answer 4

Not much, around 1/4 the production of oxygen of a tree.

A tree has the ability to convert 1 metric ton per year of CO2 into oxygen. This will support 4 full grown human beings in an enclosed environment. (3 if 1 does a lot of working out.)

The human body gives off about 1/4 that per year in CO2 production.

Answer 5

If global warming is what they say we would have been dead 100 years ago at the height of the industrial age. There were no clean burning fuels and cars were using leaded gasoline for 70 years. How global warming will happen is simple: Population growth of the planet will double to 13 billion people in 25-30 years. More energy will be needed. There will be a huge strain on the energy industries. War and massive disease will likely consume much of the population. This is how nature works when it is burdened with excessive population. Look at Africa, Afghanistan, the middle east, Southeat Asia. In many countries Polio, malaria, smallpox, ebola are killing hundreds and thousands of people daily. Why are you worried about greenhouse gasses?

Answer 6

Here's the deal about CO2.

There is a natural "carbon cycle" which recycles CO2. Many sources emit it, many sinks (like plants) absorb it.

But it's a delicate balance. We're messing up the balance by digging up carbon the natural cycle buried over thousands of years and burning it real fast.

You can see it clearly in this graph. The little teeth are the natural cycle; plants reducing it in summer, it going up a little in winter. The huge move upwards is us, burning fossil fuels.

http://scrippsco2.ucsd.edu/graphics_gallery/mauna_loa_record/mlo_record.html

We're messing up nature big time. And that threatens very bad things for coastal flooding and serious damage to our agriculture. We need to fix it.

Answer 7

carbon dioxide and monoxide are the main considerable reasons of the international warming CO2 is produced by way of autos factories burning stuff etc. yet CO2 isn't constantly a undertaking working example if the worldwide has a a great number of flowers CO2 does not be a undertaking yet because of the fact of people a great number of flowers are long gone Carbon monoxide is produced additionally in autos and in case you lighted a candle and putted a jar on it it rather is going to produce CO witch is poisonous

Answer 8

CO2 is carried in blood in three different ways. (The exact percentages vary depending whether it is arterial or venous blood.)

Most of it (about 80%–90%) is converted to bicarbonate ions HCO3− by the enzyme carbonic anhydrase in the red blood cells.[citation needed]
5%–10% is dissolved in the plasma[citation needed]
5%–10% is bound to hemoglobin as carbamino compounds.[citation needed]
The CO2 bound to hemoglobin does not bind to the same site as oxygen; rather it combines with the N-terminal groups on the four globin chains. However, because of allosteric effects on the hemoglobin molecule, the binding of CO2 does decrease the amount of oxygen that is bound for a given partial pressure of oxygen.

Hemoglobin, the main oxygen-carrying molecule in red blood cells, can carry both oxygen and carbon dioxide, although in quite different ways. The decreased binding to carbon dioxide in the blood due to increased oxygen levels is known as the Haldane Effect, and is important in the transport of carbon dioxide from the tissues to the lungs. Conversely, a rise in the partial pressure of CO2 or a lower pH will cause offloading of oxygen from hemoglobin. This is known as the Bohr Effect.

Carbon dioxide may be one of the mediators of local autoregulation of blood supply. If it is high, the capillaries expand to allow a greater blood flow to that tissue.[citation needed]

Bicarbonate ions are crucial for regulating blood pH. As breathing rate influences the level of CO2 in blood, too slow or shallow breathing causes respiratory acidosis, while too rapid breathing, hyperventilation, leads to respiratory alkalosis.

It is interesting to note that although it is oxygen that the body requires for metabolism, it is not low oxygen levels that stimulate breathing, but is instead higher carbon dioxide levels. As a result, breathing low-pressure air or a gas mixture with no oxygen at all (e.g., pure nitrogen) leads to loss of consciousness without subjective breathing problems. This is especially perilous for high-altitude fighter pilots, and is also the reason why the instructions in commercial airplanes for case of loss of cabin pressure stress that one should apply the oxygen mask to oneself before helping others—otherwise one risks going unconscious without being aware of the imminent peril.

According to a study by the USDA,[3] an average person's respiration generates approximately 450 liters (roughly 900 grams) of carbon dioxide per day

Answer 9

CO2 is not a pollutant. Especially for plants that breath it.