Potassium balances the effects of sodium and helps keep fluid levels within a certain range. Your body should maintain a specific amount of potassium in the blood, ranging from 3.6 to 5.2 millimoles per liter (mmol/L).
Mythology and Prophecy. The word 'volcano' comes from the little island of Vulcano in the Mediterranean Sea off Sicily. Centuries ago, the people living in this area believed that Vulcano was the chimney of the forge of Vulcan-the blacksmith of the Roman gods.
The molten rock that comes out of a volcano is called lava. When molten it is a liquid. When it hardens it is still lava, now in the solid form. Magma is the term used for lava when it is below the surface. 1. Molten rock that reaches the earth's surface through a volcano or fissure.