There's a medieval story about a lady who had no food, so she was told to make soup out of a stone. Thereafter, she knew she would never be hungry again
They used the rocks for squishing things such as nuts, well for food.
Sauropods, who were plant-eating dinosaurs, used rocks to grind their food to aid in digestion. These rocks are called gastroliths.
Rocks are used in buildings and art. Minerals are used in food, like salt. Soil is used to farm.
they used rocks and fire
Salt, which is actually a mineral called halite, is a commonly used food.
They are called gastroliths.
Certain rocks, hand-picked river stones, known as "hangi", are used in the cooking of food.
Birds swallow very small rocks that are used by their gizzards to grind their food.
the apalachees used rocks for grinding food.
Irrigation in Egypt was used a lot for crops for water,and silt a very rich soil with rocks and dirt,was used to grow food
what are metamorphic rocks be used for
There are a few types of rocks that are used when building a house. You can use clay rocks, sand rocks or creek rocks have also been used.