Amugy a CO2 artalmatlan
Erdekes, de ez nem teljesen igaz:
Concentrations of 7% to 10% may cause suffocation, even in the presence of sufficient oxygen, manifesting as dizziness, headache, visual and hearing dysfunction, and unconsciousness within a few minutes to an hour.
http://en.wikipedia.org/wiki/Carbon_dioxide#Toxicity
Es meg ez is erdekes:
In human subjects exposed to low concentrations (less than 4 percent) of carbon dioxide for up to 30 minutes, dilation of cerebral blood vessels, increased pulmonary ventilation, and increased oxygen delivery to the tissues were observed (Gibbs et al. 1943, Patterson et al. 1955). These data suggest that carbon dioxide exposure can aid in counteracting effects (i.e., impaired brain function) of exposure to an oxygen-deficient atmosphere (Gibbs et al. 1943).
http://www.epa.gov/ozone/snap/fire/co2/co2report.html