Answer:
Volcanoes are classified into three: active, dormant, and/or extinct. Active volcanoes are those with a history of eruptions and have a possibility to erupt again. while dormant volcanoes are those that have no history of eruptions (commonly known as sleeping volcanoes) but have a substantial possibility to erupt in the future like the Mt. Kilimanjaro. lastly, extinct volcanoes are those which have not erupted in human history—great example is Mount Thielsen in Oregon.
