This text is missing some spaces, please add them: Activevolcanoescoulderuptatanytime;dormantvolcanoeshavebeenknowntoeruptbuthavenoteruptedrecentlyandextinctvolcanoesareunlikelytoeruptagain.
Active volcanoes could erupt at any time; dormant volcanoes have been known to erupt but have not erupted recently and extinct volcanoes are unlikely to erupt again.