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Of Conservation and Resources Generally
The Nature of Renewable Resources
9 other sections not shown
absorb acres amount arid bacteria biotic potential carrying capacity Chlorophyll climate cover crops CROP ROTATION cultivation dependent destruction domestic drainage earth economic environment essential factors fallow areas farm woodlots fertility fire fish flood control forage forest area grass grazing green manure ground growing growth of living gullies habitat increase production industrial irrigation land management limited livestock living things mammals MANAGEMENT aims manure minerals moisture MULCH MULTIPLE PURPOSE DAMS natural needed nitrogen non-renewable resources nutrients ORGANIC GARDENERS organic material overgrazing pests Photosynthesis plants and animals plowing pollution populations PRACTICE OF CONSERVATION predators productive land protect protozoa rainfall range land range management recreation renewable resources reservoirs restoration rivers run-off seed silt slopes soil species stored streams SUBSOIL supply surface sustained yield technicians ticular timber tion topsoil ture underground usage varies vegetation wastes watershed wilderness wildlife management wind wood YIELD MANAGEMENT