lithosphere and mesosphere inner core and outer core outer core and mantle mantle and crust
Some of the thermal structure of Earth is the result of a combination of chemical composition, temperature, and pressure. Which is a boundary that best demonstrates a contact point between layers having relatively the same temperature and chemical composition?

Options:
- lithosphere and mesosphere
- inner core and outer core
- outer core and mantle
- mantle and crust

inner core and outer core