Main symptoms of carbon dioxide toxicity (See <a href="https://en.wikipedia.org/wiki/Carbon_dioxide#Toxicity" class="extiw" title="wikipedia:Carbon dioxide">Wikipedia:Carbon_dioxide#Toxicity</a>). 
<p>References:
</p>
<ul><li><a rel="nofollow" class="external text" href="http://www.inspect-ny.com/hazmat/CO2gashaz.htm">Toxicity of Carbon Dioxide Gas Exposure, CO2 Poisoning Symptoms, Carbon Dioxide Exposure Limits, and Links to Toxic Gas Testing Procedures</a> By Daniel Friedman - InspectAPedia</li>
<li>Davidson, Clive. 7 February 2003. "Marine Notice: Carbon Dioxide: Health Hazard". Australian Maritime Safety Authority.</li></ul>
To discuss image, please see <a href="//commons.wikimedia.org/wiki/Template_talk:Human_body_diagrams" title="Template talk:Human body diagrams">Template talk:Human body diagrams</a>
<a href="https://en.wikipedia.org/wiki/User:Mikael_H%C3%A4ggstr%C3%B6m" class="extiw" title="en:User:Mikael Häggström">Mikael Häggström</a>
2009-02-28
See above. All used images are in public domain.