Hello chegg expert please I need the correct and complete answers of those questions they are very important for me and in the same time it's urgent very very urgent please please help me . 1- Introduce the relationship between TQM and PDCA ?

2- Explain the difference between continuous and model-based improvement approaches?

3- Explain the goals of descriptive process modeling? How to understand the complexity of the process model

4- Explain the CMMI and capability levels, Which process areas must be considered for a CMMI maturity level 2 appraisal?