Answer:
No; the study is based on a volunteer sample, which may be very different from a randomly selected one.
Explanation
Her plan cannot be effective because she could base her own judgenent on samples that was randomly selected for consideration.
Teen violence in a relationship can show up in many ways. Someone in the relationship may try to control the other person by what they wear, when they go out, who they talk to. Violence can also be shown by physical violence to the other person in the relationship. And since it is with teens the person being abused may not always try to get out of the relationship or think it is "normal".
The cervical. That’s the smallest, and the lumbar is the largest.
Your immune system uses a huge army of defender cells - different types of white blood cell. You make about 1000 million of them every day in your bone marrow. Some of these cells, called macrophages, constantly patrol your body, destroying germs as soon as they enter. This is your 'natural' or inborn immunity. But if an infection begins to take hold, your body fights back with an even more powerful defence of T- and B-cells. They give you acquired immunity, so that the same germ can never make you as ill again.
