These formed hard igneous rocks which have resisted erosion.

Since basalt resists erosion, water traveling over it remains relatively free of sediments.

This would resist erosion while the surrounding surface is eroded away to create a ridge.

It would repudiate President Bush's campaign pledge to resist further erosion of wetlands.

Efforts such as these could help Chinese dialects resist erosion.

Farmers say it is a crop that needs few pesticides, shades out weeds, resists erosion - and can make money.

This allows the soil to resist erosion better than if it were dry.

They have to chop the trees that can resist erosion and propulsion of waves.

Ice and water eroded the looser rocks, while the harder ones in the mountain top have resisted erosion.

The waterfall is located here because of Cambrian rock which has resisted erosion.