Unit 6: Genre Study 1 – Expository Text

Our bodies continually lose salt through bodily functions and the supply needs to be constantly replenished.

Some mines have underground rivers and lakes that can be crossed by boat, and one mine in southern Poland even has ornate rooms carved out of salt!

Everywhere in the world, it has been found that early humans who survived by eating wild animals and gathering wild edible plants did not have to think about salt.

Though it is unknown exactly when this was first discovered, it is one of the most significant changes in history. It meant that for the first time people could journey far from home, eating preserved food.

On every continent, in every century, the dominant people were the ones who controlled the salt trade.

Scientists learned that the salt crystals in salt domes join together to form an impenetrable, glasslike wall.

Gold was a very rare and valuable commodity.

"Why this morning I passed a house that had gold garbage cans! We need something that is not in such wide distribution to use as money."