False
Sedimetary rocks can be formed from changes in igneous rock, and igneous rock can be from changes in sedimentary rock.
<span>The answer is cysteine. This is a half essential proteinogenic amino acid with the formulation of HO₂CCHCH₂SH. It is prearranged by the codons UGU and UGC. The thiol side chain in cysteine frequently partakes in enzymatic responses, as a nucleophile.</span>
Not sure what the choices are but a biotic factor is anything living.
OmposingFossils in the museums are coated with chemicals to prevent the bones from decomposing.
