The International Journal of Digital Earth is an international peer-reviewed academic journal (SCI-E with a 2016 impact factor 2.292) focusing on the theories, technologies, applications, and societal implications of Digital Earth and those visionary concepts that will enable a modeled virtual world.
Search the Internet with Kids.Net.Au. Definition of sodium. a silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); burns with a yellow flame and reacts violently in water; occurs in sea water and in the mineral halite (rock salt)
Sodium is one of several minerals that are also electrolytes, whose primary function is to regulate fluid in your cells. The upper limit for sodium set by the Institute of Medicine is the equivalent of 1 teaspoon daily for healthy adults age 50 and under. Intake higher than this amount can result in adverse health effects, including the development of hypertension and increased risk for heart attack and stroke.