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In a soil profile, the C horizon consists mainly of:

Atopsoil rich in humus
Bsolid unweathered bedrock
Cweathered rock fragments
Dvery fine clay particles
Answer & Solution
Correct answer: B. solid unweathered bedrock
1. Horizons are arranged by depth, growing less weathered further down. 2. The A horizon at the top holds the finest particles and the most humus. 3. Below the layers of soil lies the C horizon, which is bedrock. 4. Beneath that the D horizon holds small soil particles. 5. Naming an E horizon is a recorded error, since no such horizon exists in the profile. _Source: NECTA CSEE 2023 Geography 013, Question 1: Multiple Choice Questions, item (ii)_
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