Which instruments do volcanologist use to predict volcanic eruptions?

A seismometer is a major instrument used in predicting an eruption. This can be used to track the movement of magma beneath the surface before activity occurs. Instruments that measure the deformation of ground and the fissures can also be used to track and predict volcanic activity.

The answer is a because - is an direction

U. life is what you go through to become a better person. it makes you stronger, wiser, and more creative. it can be hard but its ok. because i believe everyone was put here for a reason. whether or not you know that reason you should always look towards the future and trust in god for a better tomorrow.be safe and blessed