Question

select all the correct answers. which two layers of earth are mainly composed of metallic elements such as nickel and iron, which are abundant in meteoroids and comets? lower mantle upper mantle outer core inner core crust

Explanation:

The Earth's core (both inner and outer) is rich in metallic elements like nickel and iron. The inner core is solid, and the outer core is liquid. These metals are also abundant in meteoroids and comets. The mantle (upper and lower) is mainly silicate - rich, and the crust has a variety of elements but not predominantly nickel and iron like the core.

Answer:

inner core, outer core