The MOST important populations in an ecosystem are the A
first-order consumers and second-order consumers
B.
producers and consumers
С
decomposers and producers
D
consumers and decomposers
O

I think the answer me if I'm wrong I'm very very sorry.

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.