Employment (1) Moisture (1) Specimens (1) Plant species (1) Plant diversity (1) Opuntia (1) Wealth (1) Steppes (1) Samples (Commerce) (1) Criminals--Rehabilitation (1) Prickly pears (1) Plants (1) Plantations (1) Phosphorus (1) Nitrogen (1) Limestone (1) Impact (1) Hydrogen-ion concentration (1) Ficus (Plants) (1) Electric conductivity (1) Droughts (1) Desertification (1) Biotic communities (1) Algerians (1) Planting (1) Age (1) Soils (1) Rates (1) Occupations (1) Delincuentes--Rehabilitación (1)