b. symmetric difference the list of users of one although not both with the given sets. Typically symbolized: A + B dermal ectodermal endodermal epidermal epithermal geothermal hydrothermal intradermal isothermal mesodermal photothermal electrothermal See All Rhymes for thermal Radiation is the sole approach that doesn’t require a medium. It’s https://mpi-thermal.com/blog/thermal-shock-vs-thermal-cycling-test/