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Read the following statements regarding decomposition and its regulating factors: A. Decomposition is largely an oxygen-requiring process. B. The rate of decomposition is quicker if detritus is rich in lignin and chitin. C. Humus is highly resistant to microbial action and undergoes decomposition at an extremely slow rate. D. Warm and moist environment inhibit decomposition whereas low temperature and anaerobiosis fa

Options

  1. AA, B and C only
  2. BA, C and E only
  3. CC, D and E only
  4. DB, D and E only

Correct answer

B. A, C and E only

Step-by-step solution

Statement A is correct as decomposition is largely an oxygen-requiring process. Statement B is incorrect because the decomposition rate is slower if detritus is rich in lignin and chitin, and quicker if it is rich in nitrogen and water-soluble substances like sugars. Statement C is correct as humus is a dark-coloured, amorphous substance that is highly resistant to microbial action and decomposes at an extremely slow rate. Statement D is incorrect because a warm and moist environment favours decomposition, whereas

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