> Biology has a pretty limited set of building blocks to work with. Not that small: https://www.researchgate.net/figure/Periodic-representations-of-the-element

> Biology has a pretty limited set of building blocks to work with. Not that small: https://www.researchgate.net/figure/Periodic-representations-of-the-elements-A-Conventional-table-with-linear-columns-and_fig3_8882353 https://www.researchgate.net/figure/Periodic-representations... Proteins can bind and use all kinds of other elements and the combinatorial space is enormous.