A. When volcanoes erupt, often, they cause shaking of the ground known as gradation. And the events are commonly experienced in other countries.

B. They move, either pushed together or pulled part along the plate boundaries.

C. Plates along the country bordelines ae constantly moving. As they move, they are either pushed together or pulled part and volcanoes are formed along those boundaries. When the volcanoes erupt, often, they cause shaking of the ground known as earthquake. Both events are commonly experienced by countries located long the plate borderlines.