What are the reasons for the significant differences in the levels of carbon dioxide in Earth's atmosphere compared to other planets like Venus and Mars, which do not have an ozone layer or liquid water? - TL Winslow, Pansophist master of STEM and world history

https://www.quora.com/What-are-the-reasons-for-the-significant-differences-in-the-levels-of-carbon-dioxide-in-Earths-atmosphere-compared-to-other-planets-like-Venus-and-Mars-which-do-not-have-an-ozone-layer-or-liquid-water/answer/TL-Winslow