Thank you for the links. I read "On Hens, Eggs, Temperatures and CO2: Causal Links in Earth’s Atmosphere". I'm not a climate scientist however, the "which came first the chicken or the egg" argument - when applied to CO2 and increases in temperature - doesn't definitively establish that rising temperatures are causing the increases in CO2. Periods of climate change in the Earth's history prior to humans would occur over countless thousands of years. Climate change is now increasing exponentially over decades at an alarming rate that doesn't allow time for species adaptations. Climate scientists have stated the current Climate Crisis is caused by humans and the burning of fossil fuels regardless of what occurred billions of years ago.