Of the Soil Importance and Him Hygienic Protection to Do
Keywords:
considered, productivity, engineering, important, situation, biosphere, earthworms, environment, pollen, chemical.Abstract
From this one how many billions of years before land hard rock and from the rocks consists of was. To him water , wind , heat and Cold the air temperature effect reached decayed and to the soil turned .Harvest was on the ground plants , animals appear was.