4 ms·

CO2 in atmosphere: 0.04%. What sort of levels is it inside? Isn't it inert? (hence the problem of global warming)

• AdrianB1 4y ago
  In a room with poor ventilation it can go to several percent.
• wlonkly 4y ago
  It is inert -- but your brain prefers oxygen to CO2, despite oxygen being far from inert.