unit 16

1. (of a person) tending to spend much time seated; somewhat inactive
4. suitable or proper in the circumstances.
8. resulting from or relating to an irresistible urge.
9. the process of making an area more urban
10. a person or thing that comes before another of the same kind; a forerunner.
13. A hormone made by the pineal gland and helps control the body's sleep cycle
14. causing harm or damage
16. websites and applications that enable users to create and share content or to participate in social networking.

2. the action of giving someone support, confidence, or hope.
3. a child between the ages of approximately eight and twelve
5. having intellectual depth and insight
6. soon after the beginning of a process
7. the thickness, size, or capacity of something, especially as a standard measure.
11. mentally or emotionally exciting or overwhelming
12. restrain oneself from doing or enjoying something
15. prevent (a process or activity) from continuing or being carried out properly.