Sources - dicalcium phosphate, bone meal, and low fluorine phosphates. Place some salt into a container at the front of the classroom. Have a volunteer come up and taste it and tell what it is. Explain that this is considered a mineral. Deficiency signs - nutritional anemia.
Animals are irritable, their heart beat is irregular, and there is severe kidney damage.
Deficiency signs - rabbits develop small crooked legs, chicks display a deformity of leg bones, causes sterility, and ovulation is irregular. Deficiency signs - growth and hair development are retarded. Deficiency signs - nutritional goiter. Sources - iodized or mineralized salt. Function - has a role in enzyme systems.