Computer Science Homework Help

The Windows Phone 7 is not the next iteration of the Windows Mobile platform, but is its successor.  It was built specifically for the Qualcomm Snapdragon processor family and because it was launched three and a half years after the iPhone, it has benefitted from the lessons learned by older revisions of iOS. 

1. How is the concept of ”tombstoning” used in mobile app development?
2. Why is implementing metro-specific design patterns (such as tiles) important in mobile app development?
3. Why is leveraging data over the web to add value to apps an important aspect in development?