Which outcome changes the texture of topsoil when earthworms accelerate decomposition?

💡 Explanation

Bioturbation by earthworms accelerates organic breakdown and soil mixing, thus leading to a more homogenized particle distribution in the topsoil due to physical reworking by ingestion; therefore this answer rather than option B which involves mineral alteration.

• Which outcome commonly occurs with prolonged weakening of upwelling currents?
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