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Answer:
Over geologic time, volcanic eruptions and related processes have directly and indirectly benefited mankind:
Volcanic materials ultimately break down and weather to form some of the most fertile soils on Earth, cultivation of which has produced abundant food and fostered civilizations.
The internal heat associated with young volcanic systems has been harnessed to produce geothermal energy.
Most of the metallic minerals mined in the world--such as copper, gold, silver, lead, and zinc--are associated with magmas found deep within the roots of extinct volcanoes.
Explanation:
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Over time, this released gases into the atmosphere. In turn, this created Earth's oceans, which allowed the first life forms to flourish. Put simply, volcanoes keep the Earth warm and wet, which are two critical elements for sustaining life.
Volcanic eruptions produce three types of materials: gas, lava, and fragmented debris called tephra.
Over geologic time, volcanic eruptions and related processes have directly and indirectly benefited mankind: Volcanic materials ultimately break down and weather to form some of the most fertile soils on Earth, cultivation of which has produced abundant food and fostered civilizations.