In general,a complete diet should provide all the vitamins a body needs in their natural form.

VOA: special.2009.04.21

It was the natural form of government for free people.

VOA: special.2009.04.12

Brown rice is the grain in its natural form.

VOA: special.2010.06.30

These pictures show young readers what led Darwin to form his great discovery: the evolution of species through natural selection.

VOA: special.2009.02.27

The action of wind and water can form cave openings like natural rooms within the rock.

VOA: special.2009.07.20