How does lava form?

I cant find out any where online, does anyone know? or:I can't find out any where online, does anyone know?or:A volcano is a vent that connects molten

I can't find out any where online, does anyone know?

or:I can't find out any where online, does anyone know?

or:A volcano is a vent that connects molten rock (magma) to the earth's surface. It includes the surrounding cone of built up material. Magma erupting from a valcano is called lava. I hope this helps!

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