You are at the grocery store and trying to decide what type of salt to buy. one option is advertized as salt (non-iodized) the other is iodized salt. you remember that back in your biology class you learned something about iodine. why would the manufacturer add iodine to salt?

Living organism contains both the organic and inorganic molecules in their body. Inorganic molecules are present as trace elements in their body and plays an important role in growth and metabolism of the organism.

Iodine is an important trace element of the body. One should include ionized salt in its diet as iodine acts as a precursor of thyroxine hormone. The deficiency of iodine in the body can cause a disease known as goiter. Iodine plays an important role in the growth and metabolism of an individual.

true                                                                                                       true true true true true true

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.