Describe three stages in the life cycle of a volcano

The three stages of a volcano are active, dormant and extinct. An active volcano is either erupting or showing signs that it is going to erupt, such as emitting gas. A dormant volcano is not active, but it could become active again, and an extinct volcano is unlikely to erupt again.

Active Volcano - are volcanoes with different levels of activity. These range from volcanoes that frequently erupt and cause large explosions to those that spend long periods without activity and emit only small volumes of gas.Dormant Volcano - A dormant volcano is one that has stopped expelling magma for at least a decade, but which may show signs of disturbance and erupt again.Extinct Volcano - Structure in which volcanic activity has been detected, however, it is known that the rock formation will no longer erupt.

Exposed great deposits of coal and iron ore