An example of a geologic event that could be recorded in rocks is

This example is the volcanic eruption because it is a drastic emission that occurs on the surface of the earth coming from the interior of the volcano. This event is recorded in the rocks in a violent way producing a large eruption. The eruptions are the cause of the increase of the temperature in the magma that is in the interior of the terrestrial mantle.

Amath expression is a collection of one or more terms, which are separated by the signs ( + , - , x , / ).example :   8+b8+b  or  a−3a−3in algebra, an equation is a mathematical statement with two expressions where, each expression is separated by an equal (=) sign. variables can be present on both the sides of the equality (=) sign and we use letters to denote such variables.example 1:   x=4+2x=4+2  , [here, we can observe that the variable is present only on one side of the equation].example 2:   2x+3=x+42x+3=x+4  , [here, we can observe that the variables are present on both side of the equation].

Answerstratovolcanoes///near or in the ring of fire;