Warning signs of this extreme event include gas eruptions, tremors, change in size or shift, and change in magnetic field

convection within Earth’s interior

Explanation:

Complete question

Name this event

Solution

During the convection within Earth’s interior , the earth's core undergo convection leading to turbulent dynamic that further leads to changing of magnetic field.

Due to movement of core material, there is interaction between the  mantle convection and plate motions.

answer carbon and three oxygen atoms;