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Benefits of Volcanic Eruptions Volcanic eruptions present various dangers to humans and to wildlife habitats. But volcanoes also provide benefits to humans and to the environment. These benefits include fertile soils, a renewable energy source, and construction materials.ey Concept The effects of volcanic eruptions can change human and wildlife habitats. â¢ Volcanic eruptions can cause the loss of human life and the devastation of wildlife habitats. â¢ Volcanic eruptions can cause the average global temperature of Earth to decrease.
Since volcanic eruptions are caused by magma (a mixture of liquid rock, crystals, and dissolved gas) expelled onto the Earth's surface, we'll first review the characteristics of magma that we covered previously.hort-term prediction of volcanic eruptions involves monitoring the volcano to determine when magma is approaching the surface and monitoring for precursor events that often signal a forthcoming eruption. 1  Earthquakes-As magma moves toward the surface it usually deforms and fractures rock to generate earthquakes.