Questions:
1. Define and explain a closed system and provides an example
2.Define and explain an open system and provides an example
3.Explain the inner and outer flows of a closed system.
4.Explain the inner and outer flows of an open system.
5.Define and explain leakages in an open system
6. Define and explain injections in an open system
7. Provide a personal example of a leakage, describes it and explains it.
8. Provide a personal example of an injection, describes it and explains it.