What is the main difference between the outer core and the inner core of the Earth? a. The inner core is mostly solid iron, the outer core is mostly liquid nickel.
b. The inner core is hotter and liquid and the outer core is cooler and solid.
c. The inner core is solid iron and nickel and the outer core is liquid iron and nickel.

On the doctoral journey, you will need to adjust your thinking and perspective. it is inevitable that your world view will be challenged. how you respond to those instances of challenging remains in your control. this may sound daunting and even seem to be unacceptable, but it is the inexorable result of engaging in "deep thinking" while becoming an academic. remember, you are not just becoming a researcher, but you are also becoming a learned person (an academic) who will be charged with the responsibility of acting as a gatekeeper of knowledge and knowledge development. what distinguishes an infant academic from a mature academic? explain. how does the above biblical challenge to move toward mature thinking parallel the increased responsibility for knowledge and knowledge development that comes with the earning of a doctoral degree? explain.