Write four questions and answers about the above text to check for comprehension.

Volcanic eruptions
A volcano is an opening in the earth’s surface that allows magma (hot liquid and semi-liquid rock), volcanic ash and gases to escape. They are generally found where tectonic plates come together or separate, but they can also occur in the middle of plates due to volcanic hotspots. A volcanic eruption is when gas and/or lava are released from a volcano—sometimes explosively. Volcanoes provide a number of environmental benefits, for example: fertile soils, hydrothermal energy, and precious minerals. But they also pose several hazards: volcanic ash, gases, lahars (mud flows), landslides, lava flows, and pyroclastic flows (fast-moving currents of hot gas). Volcanic eruptions can be deadly and often cause population displacement and food shortages. 
1-Q: What comes out of the earth's surface during a volcanic eruption?
   A: Volcanoes emit magma, volcanic ash, and gases.

2-Q; What are some of the benefits of volcanic eruptions?
    A: Volcanoes provide fertile soil, hydrothermal energy and minerals.

3: Q; What are lahars and pyroclastic flows?
    A: Lahars are mudflows and pyroclastic flows are fast-moving currents of hot gas.

4: Q; Whare are some of the dangers of volcanoes?
   A: Volcanoes are dangerous and often deadly, they can cause population displacement and food shortages.