Supposedly a single human produce around 300g of carbon per day in the form of carbon dioxide. A tree's dry weight is about 50% carbon, but when the tree is al

Supposedly a single human produce around 300g of carbon per day in the form of carbon dioxide. A tree's dry weight is about 50% carbon, but when the tree is alive, it's probably still 80% water. So I'm approximately guessing that a tree needs to grow 3kg per day to offset a single human's CO2 production. I don't think there are many plants that grow at a rate of 3kg per day -- you'd probably need 500 indoor plants making 6g of mass per day. I've grown some hydroponic basil that makes almost 50g of material per day, so maybe it's possible to have 60 indoor basil plants to offset your carbon production. When I chopped the basil plant, it was as tall as I was.