Living trees are only about 15...18% carbon by weight. [1] Other greenery is probably even less, given that significant proportion of trees' mass is in the trun

Living trees are only about 15...18% carbon by weight. [1] Other greenery is probably even less, given that significant proportion of trees' mass is in the trunk as cellulose (some 50% of it)[2], which is about 44% carbon. On the other hand, CO2 is only about 27% carbon (also by weight). [3] [1] https://web.extension.illinois.edu/askextension/thisQuestion.cfm?ThreadID=19549&catID=192&AskSiteID=87 https://web.extension.illinois.edu/askextension/thisQuestion... [2] https://www.britannica.com/science/cellulose https://www.britannica.com/science/cellulose, https://en.wikipedia.org/wiki/Cellulose https://en.wikipedia.org/wiki/Cellulose [3] mostly O16, mostly C12, 12 / (12+16+16)