Question

what is volcano on how does volcano eruption happen?????​

Answer 1

Because it is lighter than the solid rock around it, magma rises and collects in magma chambers. Eventually, some of the magma pushes through vents and fissures in the Earth's surface. Magma that has erupted is called lava. Some volcanic eruptions are explosive and others are not.

Answer 2

There are different types in which the volcano erupts :

1.Eath Quakes

2.Over load of lava(molten rock)