Which of the following is incorrect?

 Decomposition is largely a non oxygen requiring process.

 The rate of decomposition is controlled by chemical composition of detritus and climatic factors.

In particular climatic condition, decomposition rate is faster if detritus is rich in lignin and chitin and decomposition is slower if detritus is rich in nitrogen and water-soluble substances like sugars.

Temperature and soil moisture are the least important climatic factors that regulate, decomposition through their effect on the activities of soil microbes.