*Please*, only answer this question if you *don't* know the answer?

What percentage of the atmosphere is CO2?

I would like to get a feel for what the average person (who doesn't already know the true figures) thinks the percentage of carbon dioxide in the atmosphere is.

We are being bombarded with hype from the global warming scare mongerers about rising CO2 levels, so what do you think the figures are.

Please, please, please, if you know the answer, or have looked it up, don't post the true figure here.

Thanks.

Answers:
Well I do know that most of the atmosphere is made up of Nitrogen and the %. The next main constituent is Oxygen. I also know the %, which leaves not a lot for all the trace gases, so on that basis CO2 makes up a very small part of that remaining %. Never thought about it that way before, so well done. Very interesting! Keeping faith with your question, and wishes, I deliberately did not put in the actual percentages and I didn't know the % of CO2 in the atmosphere, still don't, although I now have a much better idea.
Actually, I don't know. I bet its high though!!
I have absolutely no idea!
42%
The percentage of the atmosphere that is CO2 is the same as the percantage of your face that is ugly.

Yeah, that's right, I went there.

Other than that, I'll say: 13.
I dunno, mabe 0.4%
aint got a clue but as a guess id say 20% of the atmosphere is co2
Sorry, I know the answer so I'm not really answering just informing you that I know the answer which is not the answer, I know, but I just thought I'd answer and tell you that I know the answer...God drunk already, this is some kind of record!
ermm i dont have a clue prob would say bout 60%.is that a stupid guess?
From what i remember from school. Oxygen 23%
I am not sure about CO2- is it 70% or was that nitrogen.
With all the Cows in the world I'd say 40%
I haven't looked at all, and i probably will be way out. but no doubt some smart-alic nob will post the real thing pretending he didn't know.

my guess woud have to be quite low as it is poisonous to us. so i'd have to guess at something like 0.5%.. however i'd also say that as you went higher into the air into the different atmospheres i think there'd be more, as there is less O2 up there.
nope havent a clue but it'll be some where between 1% and 100% i bet ;-)
Guessing, I say 10% or so.
Hope that helps
Yeah - broadly speaking I know the answer too - and am watching the answers coming up with interest. Good question.

p.s. cows produce methane not Co2

But percentage or no; the actualy amount of increase is scarily significant. Just look at the current changes and incidents to out weather patterns.
Haven't a clue? 7%?
This is one of those things I *should* know, but I don't. So, at a guess, I'll shoot for a high percentage - about 90%
My guess will be a +- 15%

I know the atomosphere is made up of O2, Co2 and some other gases which I think form less than 10%
Sorry, I know the answer.
I was surprised by the number, but when you look at the increase ov the past 50 years it is quite worrying.

chaos theory says that a *tiny* change can cause some large effects (think 'butterfly effect')
I have no idea but is it quite high like 45% ?
33%?
ha ha i am 100% CLUELESS. try a person who teaches the subject if you want an answer eventually.
5% and that is only a guess.
about 20 per cent
I think it's about 65%, but I'm sure I'm wrong! (i'm also thinking it might be 2% aswell..)

I'm so thick!
is it 12%? last remembered.
maybe now is higher.
34%
I have no clue, but I'm betting it's not as bad as "they" indicate..I know that we NEED co2 or we'd suffocate, for that's what prompts our bodies to exhale, and that's what the plants need, and they put off oxygen..so I'm going to say 50%.
22 % I dunno just a guess.
Havent got a clue!Wouldnt even be able to guess!

Well i sopose i could guess...is it 35%? x
About 10%? We should ask the cows to stop eating the grass and let it overgrow, so when the cows fart, there's something to turn it in to oxygen, so maybe then the motorists will not get the blame.
381 ppmv

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