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Earth is made of several layers. Which makes up most of Earth's volume?

A the mantle
The outermost layer, the crust, makes up about 1% of Earth's volume. The next layer, the mantle, makes up about 84% of Earth's volume. The innermost layer, the core, has two parts: an inner core and outer core. The outer core is slightly larger than the inner core.
B the inner core
C the crust
D the outer core