Question

which of the following is not true concerning the layers of the earth?
a. the core is mostly composed of metals.
b. the mantle has both solid and liquid regions.
c. the layers of earth are uniform in thickness.
d. the lithosphere includes both the crust and upper, solid mantle.
please select the best answer from the choices provided

Explanation:

• The core, mainly made of iron and nickel (metals), so option a is true.
• The mantle has the asthenosphere (semi - liquid) and other solid parts, so option b is true.
• Earth's layers (crust, mantle, core) have different thicknesses (e.g., crust is thin, mantle is thick). So option c is false.
• The lithosphere includes the crust and upper solid mantle, so option d is true.

Answer:

C. The layers of Earth are uniform in thickness.