phosphorus - builds cell membranes, ATP (energy), bones, potassium - important in nerve action, chlorine - works in digestive acid, sulfer - builds many proteins, nitrogen - builds proteins and nucleic acid (DNA), sodium - balances body fluids, helps with nerves, hydrogen - used to build water and all biological molecules, carbon - backbone of all biological molecules, oxygen - we breathe this, also builds water and all BIO molecules, magnesium - helps with muscle contraction, iron - carries oxygen inside red blood cells, calcium - builds bones, acts between nerves and and muscles,

Biology- Element Function

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