Vegetation in Bajadas of the Arizona Sonoran Desert

Vegetation in bajadas of the Arizona Sonoran Desert

A) is largely uniform, as are the soils it grows on.
B) is largely uniform, despite variation in the soils it grows on.
C) varies in space, primarily reflecting a mosaic of ancient and recently disturbed patches.
D) varies in space, primarily reflecting a mosaic of soil types.
E) varies in space, primarily reflecting patchy enrichment by agricultural fertilization.