You still did not answer the question.....if CO2 caused the last five major extinctions and there was no burning of fossil fuel, land clearing or pollution where did the CO2 come from???? .....not once but FIVE times.....it is obviously a cycle....you are one of the gullible that has been sucked in. Arnold Schwarzenegger preaching to us about climate change...give me a break FFS....he makes a living pretending he is a terminator from the future.
You have a thin crust floating on a molten core and you think the temperature is going to remain constant?....as Daryl Kerrigan would say...you are dreaming.
You appear to have a very poor level of comprehension.
