B. An atoms energy level doesn’t have the maximum number of electrons.
Atoms bond in order to film their outer energy shells.
A caldera is a large depression formed when a volcano erupts and collapses. During a volcanic eruption, magma present in the magma chamber underneath the volcano is expelled, often forcefully. When the magma chamber empties, the support that the magma had provided inside the chamber disappears.
Answer:
the third answer (Mantle becomes more dense, and rises toward the surface of Earth.)
Explanation: