Question

5
select all the correct answers.
which two layers of earth are mainly composed of iron and nickel?
inner core
outer core
lower mantle
upper mantle
crust

Explanation:

The inner core is a solid sphere composed mainly of iron and nickel. The outer core is a liquid layer also composed mainly of iron and nickel. The lower mantle is composed of silicate minerals. The upper mantle is composed of silicate rocks. The crust is composed of a variety of elements such as oxygen, silicon, aluminum, etc.

Answer:

inner core, outer core