Currents are responsible for deep ocean circulation
The hazards from the volcanoes include lava and pyroclastics, tephra and , lahars and climate alteration. Fertile soil and geothermal energy are beneficial results of volcanic eruptions. Much of El Salvador for example is convered with volcanic ash and this has been a fertile growing medium for coffee plants.
As a way to ensure that deaf and blind individuals would be able to live and work in the community of their choice
