As volcanoes continue to burst out with damaging and killing eruptions, many countries are responding by establishing and staffing volcano observatories to provide warnings before big eruptions. What is the purpose of establishing and staffing volcano observatories?
1) To study the behavior and characteristics of volcanoes
2) To predict the occurrence of volcanic eruptions
3) To monitor the impact of volcanic eruptions on the environment
4) To provide immediate assistance during volcanic eruptions