Which two elements have similar characteristics? a: neon and fluorine b: chlorine and sulfur c: fluorine and chlorine d: oxygen and chlorine e: argon and fluorine

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents