Why and how do volcanoes actually erupt? Volcanoes erupt when molten rock called magma rises to the surface. Magma is formed when the earth's mantle melts. Melting may happen where tectonic plates ...

If you are a U.S. citizen, you need only answer ... question you or refuse to allow you on a flight because of biased stereotypes, including any based on your religion, race, national origin, gender, ...