I’m not sure you’re right there. Co2 is released in the production of cement (in cement factories). Once it’s used in the buildings it actually sucks back some

I’m not sure you’re right there. Co2 is released in the production of cement (in cement factories). Once it’s used in the buildings it actually sucks back some of that co2 back during the first years. In biosphere cement was actually a carbon sink, but it threw the system off balance, because it caused bacteria to eat more oxygen than expected. https://apnews.com/article/56b7e682362016c1d97f094c2cde4a46 https://apnews.com/article/56b7e682362016c1d97f094c2cde4a46