The correct answer is Option C. and D. The Earth consists of several layers, and the two layers that represent parts of Earth that are mostly iron and nickel are layers B and C.
The Earth's structure has been divided into several layers based on the physical and chemical properties of the materials that make up each layer.
The model is made up of four main layers: the crust, mantle, outer core, and inner core.
The outer core and inner core are the two layers that are primarily made up of iron and nickel.
Layer B, the mantle, is made up of magnesium, silicon, and iron.
Layer C, the outer core, is made up of molten iron and nickel, with some lighter elements such as sulfur and oxygen.
The inner core, layer D, is mostly composed of solid iron and nickel.
The outer core is a liquid layer located between the mantle and the inner core.
This layer is approximately 2,300 km thick and is composed primarily of iron and nickel, with some lighter elements such as sulfur and oxygen.
The outer core is responsible for generating the Earth's magnetic field.
It's also responsible for producing seismic waves that help scientists learn about the interior of the
Earth. The inner core is a solid layer located at the center of the Earth, approximately 6,371 km below the Earth's surface.
It is composed mainly of iron and nickel, with trace amounts of lighter elements such as sulfur and oxygen.
The pressure at the center of the Earth is so high that the iron and nickel in the inner core are solid, despite being at a temperature of over 5,500°C.
Therefore, The correct answer is Option C. and D.
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