Yes, about 50 square meters of leaf surface per human to offset their CO2 output. https://space.stackexchange.com/questions/26668/how-many-plants-would-be-neede

Yes, about 50 square meters of leaf surface per human to offset their CO2 output. https://space.stackexchange.com/questions/26668/how-many-plants-would-be-needed-to-produce-oxygen-enough-for-20-humans https://space.stackexchange.com/questions/26668/how-many-pla...