b. symmetric difference the set of associates of 1 but not equally of your supplied sets. Normally symbolized: A + B dermal ectodermal endodermal epidermal epithermal geothermal hydrothermal intradermal isothermal mesodermal photothermal electrothermal See All Rhymes for thermal Greenhouse gases entice some of this warmth, blocking it from escaping https://mpi-thermal.com