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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.
Studies of volcanic emissions allow scientists to compare volcanic gas output to emissions from man-made sources and to assess the effects of both past and future eruptions on the Earth's climate. Volcanic gas can also be directly harmful to humans, animals, plants, agricultural crops, and property.sually, the hazards from volcanic gases are most severe in the areas immediately surrounding volcanoes, especially on volcano flanks downwind of active vents and fumaroles. But these hazards can persist for long distances downwind following large eruptions, or from volcanoes erupting gas-rich magma.