Question

the earth is composed of several layers. choose the correct options to fill in each blank. (1 point) starting from the innermost part, earth consists of three main sections - the ​​​​​​​​, followed by the ​​​​​​​​ and finally, on top lies the ​​​​​​​​.

Explanation:

To solve this, we recall the structure of the Earth from innermost to outermost:

The Earth’s internal structure (from innermost to outermost) has three main layers:

1. Inner Core (and Outer Core, but the primary innermost solid/liquid metal layer is the core), then the mantle (the thick, viscous layer between core and crust), and finally the crust (the thin, outermost solid layer).

Assuming the blanks follow the standard order (core → mantle → crust):

• First blank (innermost): Core (includes inner and outer core, but as a main section, “core” is standard).
• Second blank: Mantle (the middle layer).
• Third blank: Crust (the outermost, thin solid layer).

Answer:

Starting from the innermost part, Earth consists of three main sections - the $\boldsymbol{\text{core}}$, followed by the $\boldsymbol{\text{mantle}}$, and finally, on top lies the $\boldsymbol{\text{crust}}$.

(Note: If options were provided, we would select the corresponding ones. Since the problem shows blanks without options, we use the standard Earth layer terms.)