Which type of development is jennier using if she is writing classes that depend on classes that are already written A. Bottom-down development
B. Top-down development
C. Aggregation development
D. Bottom-up development

Need asap write a short paper describing the history and differences between six sigma, waterfall, agile, and scrum models. understanding these models can give you a good idea of how diverse and interesting it development projects can be. describe what the rationale for them is and describe their key features. describe the history behind their development. at least 400 words

2. fluorine and chlorine molecules are blamed fora trapping the sun's energyob forming acid rainoc producing smogod destroying ozone molecules

Ais the hardware where the data is actually stored.