styles of communication
13398107 volcanoes-a-presentation
Volcanoes
Earthquakes Volcanoes Earthquakes, volcanoes and plate tectonics.
Erupting Volcano Anak Krakatau. Is this a mud volcano on Mars? If so, could it be dredging up martian microbes? This strange possibility has been suggested.
Morgan Davis, Kamellia Hill, Xuelli Li, Nancy Markovinovic, Trisha Nelson, Waigo Yeung.