Split of the gas bias on its components: suppression of the gas power spectra (S(k = 0.01h/Mpc)) and the evolution of the total gas to baryon mass squared ($m_{\mathrm{gas}}^2/m_{\mathrm{b}}^2$). If the gas was not biased with respect to the gravity-only field, the solid lines should lie on top of the dotted lines. Solid lines: Redshift evolution of the suppression of gas power spectrum, as defined by the ratio of gas and gravity-only power spectra at k = 0.01hMpc. The gas power spectrum is normalised to the total baryon mass. In dashed lines, we plot the linear theory prediction for the baryon suppression. Dotted lines: Redshift evolution of the gas to baryon mass fraction squared, defined as the total mass in gas over total baryon mass. The colours denote different FLAMINGO runs.