Does carbon dioxide generated by human activities cause global warming? Can i have two points of view?

Question

it's for a science assignment..

Answer 1

yes it does // no it doesn't.

Answer 2

Opinion 1 - No

Opinion 2 - Yes

Answer 3

You can inform your classmates about CO2  FALLING to ground and becoming absorbed by soil or water. If you were able to obtain 'dry ice' (solid CO2) you show that when turns into gas it FALLS.  This web page is a warning about CO2 near volcanic venting:

http://volcanoes.usgs.gov/Hazards/What/V...

Quote: "But in certain circumstances, CO2 may become concentrated at levels lethal to people and animals. Carbon dioxide gas is heavier than air and the gas can flow into in low-lying areas; breathing air with more than 30% CO2 can quickly induce unconsciousness and cause death."

What Alarmists don't want people to know:  Scientists have absolutely no idea how much CO2 comes from the Earth's very hot core through the bottom of the oceans::

http://www.sciencedaily.com/releases/200...

Three million volcanoes under the oceans?!?!?

http://environment.newscientist.com/arti...

Man can't possibly compete with nature - we are virtually nothing in comparison to this vast earth!

Answer 4

It does. There are plenty of charts that show a direct correlation between the Industrial Revolution and CO2 in the atmosphere. It is also true that CO2 is released by natural methods, such as forest fires and volcanic eruptions. Methane, which is an even worse greenhouse gas, is released in large quantities by the digestive processes of cattle. The whole thing is a very intricate problem, and humans do bear a portion of the responsibility for it.

Answer 5

The short answer is yes.

The long answer is carbon dioxide on its own does not cause global warming. The problem is that with all the deforestation the carbon dioxide is not getting consumed by the trees. The surplus of carbon dioxide creates a cloud in the atmosphere. This cloud keeps the heat in thereby increasing the temperature of the planet. This is what causes global warming. And even though I said this was the long answer; this is still the short version of the long answer.

Answer 6

check this for detail

http://theglobalwarmingnews.blogspot.com...

Answer 7

for mr taylor's class? :P hehehhe

Answer 8

no they are not so toxic.. but co2 released from automobiles is harmful

Answer 9

It does...

Carbon dioxide is a greenhouse gas, the greenhouse gases include water vapour, carbon dioxide, methane, nitrous oxide, and ozone. While the sunlight reaches the surface of the Earth, the greenhouse gases would trapping the infrared rays and ultraviolet (UV) from the sunlight. While the trapping of the infrared could be released the heat when the carbon dioxide gas increasing. This is because the carbon dioxide is the main greenhouse gas. The large amount of the heat released raising the temperature of the surface of the Earth, and our planet becoming warmer and warmer.

Lastly, these process resulting in Global Warming, the global warming causes the melting of the icebag on the Northpole and the Southpole which and raising the sea-level. Hence, some of the islands and places would be underwater. Besides that, global warming also destroying the ecosystem and causes extinction.

Answer 10

There are many basic scientific facts which can only be explained if the current global warming is being caused by an increased greenhouse effect due to carbon dioxide accumulating in the atmosphere from humans burning fossil fuels.

For example, the planet is warming as much or more during the night than day.  If the warming were due to the Sun, the planet should warm a lot more during the day when the Sun has influence.  Greenhouse gases trap heat all the time, so they warm the planet regardless of time of day.  Another example is that the upper atmosphere is cooling because the greenhouse gases trap the heat in the lower atmosphere.  If warming were due to the Sun, it would be warming all layers of the atmosphere.

http://answers.yahoo.com/question/index;...

We know it's warming, and we've measured how much:

http://www.epa.gov/climatechange/science...

Scientists have a good idea how the Sun and the Earth's natural cycles and volcanoes and all those natural effects change the global climate, so they've gone back and checked to see if they could be responsible for the current global warming.  What they found is:

Over the past 30 years, all solar effects on the global climate have been in the direction of (slight) cooling, not warming.  This is during a very rapid period of global warming.

http://news.bbc.co.uk/2/hi/uk_news/62902...

http://www.pubs.royalsoc.ac.uk/media/pro...

So the Sun certainly isn't a large factor in the current warming.  They've also looked at natural cycles, and found that we should be in the middle of a cooling period right now.

"An often-cited 1980 study by Imbrie and Imbrie determined that 'Ignoring anthropogenic and other possible sources of variation acting at frequencies higher than one cycle per 19,000 years, this model predicts that the long-term cooling trend which began some 6,000 years ago will continue for the next 23,000 years.'"

http://en.wikipedia.org/wiki/Milankovitc...

http://www.sciencemag.org/cgi/content/ab...

So it's definitely not the Earth's natural cycles.  They looked at volcanoes, and found that

a) volcanoes cause more global cooling than warming, because the particles they emit block sunlight

b) humans emit over 150 times more CO2 than volcanoes annually

http://volcano.und.edu/vwdocs/Gases/man....

So it's certainly not due to volcanoes.  Then they looked at human greenhouse gas emissions.  We know how much atmospheric CO2 concentrations have increased over the past 50 years:

http://en.wikipedia.org/wiki/Image:Mauna...

And we know from isotope ratios that this increase is due entirely to human emissions from burning fossil fuels.  We know how much of a greenhouse effect these gases like carbon dioxide have, and the increase we've seen is enough to have caused almost all of the warming we've seen over the past 30 years (about 80-90%).  You can see a model of the various factors over the past century here:

http://en.wikipedia.org/wiki/Image:Clima...

This is enough evidence to convince almost all climate scientists that humans are the primary cause of the current global warming.

Answer 11

It probably won't cause measurable global warming, the same way when you spit into the ocean it doesn't cause a measurable rise in sea level.

Carbondioxide is a clear gass which absorbes a frequecy of infrared radiation (15 micron wavelength).  The atmosphere is already opaque to this wavelength of radiation so adding more CO2 will not change the characteristics of the atmosphere by any significant amount.

Climate change scientists understand this so they have developed positive feedback theories that a small amount of heating caused by CO2 will start a chain reaction.  It is very unlikely that these theories are correct, but a lot of people believe them absolutely.

A lot of geologists don't believe that humans are causing global warming because they know how much the earths climate changes with warming and ice ages when the earth gets covered in ice, sea levels rise and fall by hundreds of metres all without any human activity.

Answer 12

go richard taylor!!!!!wahahaha