Like all rock formations, natural bridges are subject to continued erosion, and will eventually collapse and disappear.

Many said they were determined to reinforce their homes and stop the continued erosion of the beach.

Such incorporation is, for her, a necessary corollary of a continued erosion of popular control over local government.

The continued erosion of union strength across the country is no cause for joy.

President Obama has offered no proposals to forestall the continued erosion of the system's financial underpinnings.

In recent years, the bird has begun to migrate into urban areas, possibly as a result of continued erosion of its woodland habitat.

Mr. Scheppach predicted that more people would qualify because of a continued erosion in health insurance coverage provided by employers.

A continued erosion of employer-sponsored coverage was the main reason for the latest increase, the bureau said.

The site was eventually abandoned due to continued erosion and the shrinking hilltop.

The alternative is to witness a continued erosion not only in commercial competitiveness but in our military-industrial base as well.