During the carboniferous period, as you mentioned in your publication, there was a high level of oxygen in the atmosphere, in which concentrations of 35% oxygen were reached, which as a consequence allowed some insects to reach enormous sizes, It is amazing to see an .incept of such enormous size. This allows me to remember also that the alteration of the temperature in this time of global warming will have as a consequence, among many others, the extinction of some insects and the proliferation of others, which will destroy the vegetation...
Thanks for such a great topic.