we live in an atmosphere of 21% oxygen. Life on earth would be very different if the oxygen concentration were twice as high, what are four difference

Question

chemistry and society

Answer 1

1) The rate of fires would probably double or triple.

 

2) Compounds containing reduced species like copper(I), sulfide, selenide, Mn(II), Fe(II) and others would be oxidized to the corresponding oxides.

 

3) Sea life that is dependent on O2 would probably thrive at lower depths in the ocean (assuming they can withstand the increase pressure and colder temperatures.

 

4) Possibly an increase in green house gases due to higher rate of natural burning.