Mobile, Alabama. Mobile, Alabama, on the Gulf of Mexico, is home to Evonik's largest North American site. The 700 or so employees here produce hydrogen peroxide, fumed silica, and the animal feed additive methionine, among other chemicals.
A complex volcano, also called a compound volcano, is a volcano with more than one feature. They form because of changes in their eruptive characteristics or the location of multiple vents in an area.
A composite volcano is built up from alternate layers of ash and lava. It has steep sides because when it erupts it lava is thick and viscous (andesitic) meaning that it does â¦ not travel great distances and stays on the side of the volcano. An example is Mount Vesuvius (which destroyed Pompeii).