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Which soil horizon is located closest to the earth's crust? O horizon A horizon B horizon C horizon

User Nmichaels
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The soil horizon located closest to the surface of the earth's crust would be the O Horizon, which consists of organic deposits (hence the O) and composting plant structures.
Hope that helped =)
User SandeepAggarwal
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5 votes
The C horizon because it lays on the hard bedrock of the earths crust.
User Pham Cuong
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