1.   How much of this former water erosion can be attributed to pluvial phases in the Pleistocene is very doubtful.

2.   The author of Mining the Earth, John Young, argues that mining has come to rival water erosion as a force for changing the landscape.

3.   To see Sele pitch is like watching water erosion.

4.   Watershed volunteers walk hundreds of miles of streams, monitoring them for storm water erosion, toxic spills or pollution from broken sewer and drainage pipes.

5.   Mila Simoes de Abreu, a Portuguese archeologist who has made extensive studies of the carvings, is convinced water erosion from the dam will destroy them.

6.   Mila Simoes de Abreu, a Portuguese archeologist who has studied the carvings, says water erosion from the dam will destroy the carvings.