15:2015:20, 30 March 2023diffhist−44
Carbon dioxide in Earth's atmosphere
Removed a redundant (and incorrect?) statement that CO2 concentration was 20 times greater than today during the Cambrian (4000 ppm is only 10 times). Replaced some ~ symbols with the words "approximately" for consistency and clarity.
15:2015:20, 30 March 2023diffhist−44
Carbon dioxide in Earth's atmosphere
Removed a redundant (and incorrect?) statement that CO2 concentration was 20 times greater than today during the Cambrian (4000 ppm is only 10 times). Replaced some ~ symbols with the words "approximately" for consistency and clarity.