Basic Definitions

Front

Rock

Back

A solid mixture of minerals that was formed in the Earth’s crust.

Front

Soil

Back

A mixture made of tiny pieces of rock, mineral particles, decayed plant and animal matter.

Front

Product

Back

Something that is made by people and often is something which is sold.

Front

Useful

Back

Having a practical or beneficial use.

Front

Natural source (of water)

Back

Naturally occurring, non-man made source.