The innermost layer of the earth is composed of iron and nickel metal. this layer is called the

The core of the earth is the innermost layer. There are two layers of the core, which are the inner and outer. The outer is molten to while the inner is solid. Kinda upside down. The answer to this question could be either the inner core, or the core as a while on its own.

Ithink the answer to that would be b):

Answer islamic scholars made advancements in technology, literature, philosophy, mathematics, astronomy, and the arts during this time period;