The main characteristics of the R horizon is ____.

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Detailed Solution

Concept:The main characteristics of the R horizon is Bedrock.
Bedrock: The layer of partially weathered or unweathered bedrock at the base of the soil profile is referred to as Rhorizons. A mass of rock, such as granite, basalt, quartzite, limestone, or sandstone, that, if it is close enough to the surface to weather, serves as the parent material for various soils. This is situated below the C horizon and is not soil. In contrast to the layers above, the R horizons mostly consist of continuous masses (as opposed to boulders) of hard rock that are impractical to dig out by hand.
Hence, bedrock is correct answer

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