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Geography

Which consequence results when increased earthworm activity occurs?

A)Accelerated mineral soil horizon mixing
B)Reduced surface runoff infiltration rates
C)Decreased topsoil organic matter decomposition
D)Diminished subsoil aeration and drainage

💡 Explanation

Increased earthworm activity leads to accelerated mineral soil horizon mixing because bioturbation physically redistributes soil components; therefore horizon textures become increasingly homogenized, rather than remaining highly stratified.

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