Circle name naming

(1) The crust is 33km thick and the core is below 2900km. The core is divided into inner core and outer core, and E is the outer core.

(2)C is located at the top of the upper mantle, which is the asthenosphere and the birthplace of magma.

(3) The lithosphere is a combination of the upper mantle and the crust above the asthenosphere, which is represented by the letter A+B 1.

So the answer is:

(1) crust; Outer nucleus.

(2) asthenosphere; magma

(3)A+B 1。