In science, fluxes refer to the flow or transfer of a particular quantity through a boundary or across a surface. Fluxes can be studied in a wide range of disciplines, such as physics, chemistry, biology, and environmental science. Researchers may study fluxes of mass, energy, heat, or other substances to better understand processes like diffusion, convection, and reactions in various systems. By quantifying and analyzing fluxes, scientists can gain insights into the dynamics and behavior of complex systems and how they change over time.