$Br$	Brinkmann number	$Q_e$	Exponential heat source parameter
$T_{\infty }^{*}$	Ambient temperature (unit: K)	$S{h}_x$	Sherwood number
$C_{\infty }^{*}$	Ambient concentration (unit: mol/m${}^3$ )	$T_s^{*}$	Temperature at the surface of the wall (unit: K)
$C_f$	Skin friction coefficient	$U_s$	Stretching sheet velocity (unit: m/s)
$C_s^{*}$	Concentration at the surface of the wall (unit: mol/m${}^3$ )	$u_s^{*}$	Velocity component in x-direction (unit: m/s)
$C_p$	Specific heat capacity (unit: mol Jkg${}^{-1}$ K${}^{-1}$ )	$v_s^{*}$	Velocity component in y-direction (unit: m/s)
$D_B$	Brownian diffusion coefficient (unit: kg m${}^{-1}$ s${}^{-1}$)	Greek Letters
$D_T$	Thermophoresis diffusion coefficient (unit: kg m${}^{-1}$ s${}^{-1}$ K${}^{-1}$)	$\alpha$	Thickness parameter
$E_1$	Electric field parameter	${\alpha }_1$	Thermal diffusivity (unit: s/m${}^2$)
$E_a$	Dimensional activation energy (unit: KJ/mol )	${\beta }_C$	Buoyancy force due to concentration (unit: K${}^{-1}$)
$E_t$	Nondimensional activation energy	${\beta }_T$	Buoyancy force due to temperature (unit: K${}^{-1}$ )
$Ec$	Eckert number	${\beta }_1$	Relaxation and retardation time ratio parameter
$G^{\prime }$	Dimensionless velocity	${\beta }_2$	Retardation time parameter
$Gr$	Grashof number	$\zeta$	Similarity variable
$Gc$	Solutal Grashof number	$\kappa$	Thermal conductivity (unit: W/(m.K))
$K_r$	Chemical reaction rate (unit: mol/s)	$\mu$	Dynamic viscosity (unit: Pa.s)
K	Chemical reaction parameter	$\nu$	Fluids’ kinematic viscosity (unit: m${}^2$ · s${}^{-1}$)
$Le$	Lewis number	${\lambda }_1$	Relaxation and retardation time ratio
$Lb$	Bioconvection Lewis number	$L^{*}$	Microorganism diffusion parameter
m	Fitted rate constant	${\lambda }_2$	Retardation time (unit: s)
M	Magnetic field parameter	$\varphi$	Dimensionless concentration (unit: mol/m${}^3$ )
$Nt$	Thermophoresis diffusion parameter	$\rho$	Density of fluid (unit: Kg/m${}^3$)
$N{u}_x$	Nusselt number	$\psi$	Stream function (unit: Kg/(m.s))
$Nb$	Brownian diffusion parameter	$\sigma$	Electrical conductivity (unit: S/m )