i guess its around 2% by biomass. But 38% of earth land surface is devoted to agriculture. https://www.fao.org/sustainability/news/detail/en/c/1274219/#:~:text

i guess its around 2% by biomass. But 38% of earth land surface is devoted to agriculture. https://www.fao.org/sustainability/news/detail/en/c/1274219/#:~:text=Globally%20agricultural%20land%20area%20is,of%20the%20global%20land%20surface https://www.fao.org/sustainability/news/detail/en/c/1274219/.... Just trying to guess at carrying capacity of the earth.