A mineral containing a useful substance is called a(n)

Bends or S-shapes along rivers are called

Peices of material carried by moving water are called

A rock from space that strikes a surface is a(n)

An igneous rock is

Magma comes from

The many layers of gases that surround the earth is its

Sedimentary rock is formed when

A mineral that is valued for being rare and beautiful is a(n)

The hard outer layer of earth is its

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