Classify the stages of succession of a field that is becoming overgrown with shrubs after a few years of disuse

The field is experiencing Secondary succession.

Explanation:

Ecological communities change slowly over time. While primary succession is initiated by pioneer species in areas that haven't previously been colonized; secondary succession always follows other communities. Secondary succession follows major disruptions in communities like fires, storms, flooding and even human disturbance.

The field becoming overgrown is typical of secondary succession. After years of disuse, the field is being occupied by species more capable of thriving in changed conditions. The community may be on its way to becoming a stable climax community if no further disruptions occur.

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.