What are the three main parts of the geosphere?
a. atmosphere, crust, core
b. lithosphere, mantle, core
c. crust, mantle, core
d. asthenosphere, lithosphere, atmosphere

The correct answer is letter C. crust, mantle, core. The three main parts of the geosphere is the crust, mantle, and core. Geosphere refers to the parts or layers of the earth's surface. The three layers mentioned are the chemical layers of the earth.

Answer the use of flood plains and irrigation;