2.1. The project environmental model, among its numerous advantages, serves to enhance awareness of external factors and issues within the project's environment. Taking this into consideration, provide an illustration of the project's environmental model. (7 marks) 2.2. There are two distinct project life cycle aspects, each featuring a scope change approval system. Identify the TWO (2) different structures. (2 marks) 2.3. Configuration management is responsible for overseeing the change process throughout the project's duration, which assists in upholding the system's integrity. Describe points detailing what the configuration management system allows. (7 marks)