Biotic resources , living organisms , Parent material , the original layer of a bedrock in an area is called , Decomposers, organisms that live in the soil is called, Topography , one of the factors that work to make a soil, Climate , various soils are made in different ways because of this, Organisms , this also affect the kinds of soil in an area, Topography , it is called the shape of the land, Time, weathering of parent material does not happen very fast it takes.

CHAPTER 23

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