Composite Volcano: S<span>teep sided cones formed from layers of ash and lava flows.</span>
Dome Volcano: Roughly circular mound-shaped protrusion resulting from the slow extrusion of viscous lava from a volcano
Shield Volcano: A broad domed volcano with gently sloping sides, characteristic of the eruption of fluid, basaltic lava.<span />
Deforestation because without trees and plants, they are nothing to convert CO2 into Oxygen.