Layer of sediment (loose grains) and organic matter that covers most of Earth's surface, produced by weathering (physical, chemical and biological processes that break down solid rock), can support plant growth).
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Châu Ái Thanh
Layer of sediment (loose grains) and organic matter that covers most of Earth's surface, produced by weathering (physical, chemical and biological processes that break down solid rock), can support plant growth).
Châu Ái Thanh