Respuesta :

shandana2

Answer:

volcanoes are types of mountains that take millions of years to form and contain magma that can blast and create a huge explosion

Explanation:

sobiaishymir7
hey.. A volcano is an opening in the earth's crust through which lava, volcanic ash, and gases escape. Beneath a volcano, liquid magma containing dissolved gases rises through cracks in the Earth's crust. As the magma rises, pressure decreases, allowing the gases to form bubbles