Question

what is volcano answer in brief​

Answer 1

Explanation:

• 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.

Answer 2

Answer:

A volcano is an opening on the surface of a planet or moon that allows materials warmer than its surrounding to escape from the interior.

When those warmer materials escapes it causes volcanic eruption.