Question

Which of the following layers is defined by its chemical composition?(1 point)
Responses

inner core
inner core

mantle
mantle

lithosphere
lithosphere

asthenosphere

Answer 1

The layer defined by its chemical composition is the **mantle**. The mantle is composed primarily of silicate minerals and has a different chemical composition compared to the outer core (which is liquid and composed mainly of iron and nickel) and the inner core (which is solid and also primarily composed of iron and nickel). The lithosphere and asthenosphere are also defined by their physical properties rather than their chemical composition.