The river has provided an important source of power in the past.

This provided a source of good jobs in the area.

Either way, it is important to provide a safe source of power.

The mass media provide a further source of material for research.

This has provided a major source of income for the community.

The stream was still near enough to provide a source of water.

This will provide an alternative source of energy for those in the community.

This can provide an important source of revenue for your business.

This area provided a natural source of the needed clay.

Visitors provide an important source of income for the Park.