3 ms·
> After 30 years 9% of CO2 in the atmosphere is man made assuming we start off with 0% man made CO2 (obviously not true). So why do you try to argue something
by lazyjones 6y ago
> After 30 years 9% of CO2 in the atmosphere is man made assuming we start off with 0% man made CO2 (obviously not true).
So why do you try to argue something based on assumptions that are by your own admissions obviously not true?
What is the "normal" amount of CO2 in the atmosphere? What amount is optimal? What difference does it make to the atmosphere whether the CO2 is according to us of human origin or not?
Presumably, nobody sane believes we're at historically high levels of CO2 right now, past levels at 1000-4000ppm are not really disputed in the scientific community.
- smolder 6y agoIt's the rate of change in CO2 levels that is unprecedented in human history and for a long time in earths history. The effects of that change include ocean acidification and habitat loss for many species. It stands to reason that atmospheric change on a timescale much smaller than what natural selection and species adaptation normally occur at could be very damaging to all sorts of ecosystems.