What does the theory of plate tectonics say about the earth's surface.

a. the earth is one solid piece.
b. the earth is mostly covered in water.
c. the earth is very thick.
d. the earth is broken into many pieces.
thx : )

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.