<span>The best method used to prevent soil depletion would be contour farming.
In contour farming, the land is tiled in consistent elevation. Contour farming is efficient in reducing soil depletion because it can conserve rain water and reduce the erosion of soil.
If there is no contour farming in your option, then choose A. Adding fertilizer. </span>
Organisms from the same genus must have features that can make them part of a same group like anatomic features, however if the organisms cannot produce fertile offspring if they interbred each other they are not from the same species.
