Volcanoes erupt when molten rock called magma rises to the surface. Magma is formed when the earth's mantle melts. ... If magma is thick, gas bubbles cannot easily escape and pressure builds up as the magma rises. When the pressure is too much an explosive eruption can happen, which can be dangerous and destructive.
Wildfires are often dangerous but serve an important purpose. Wildfires naturally clear dead waste on the forest floor, such as carcasses and plant matter. The destruction of the waste on the forest floor allows the nutrients to be returned to the soil, acting as a new beginning of sorts. Plants can begin anew and the ash acts as a fertilizer.
