Protective custody. Protective custody is a type of imprisonment (or care) to protect a person from harm, either from outside sources or other prisoners. Many administrators believe the level of violence, or the underlying threat of violence within prisons, is a chief factor causing the need for PC units.
What are the two defining features of an experiment. for a good experiment, you need good manipulation skills (don't always ask the teacher what to do). each experiment must have a dependent, an independent and control variables. your lab report must have background info, aim, hypothesis, list of appar... view the full answer.
The two main types of experiments scientists use to test their hypotheses are. 1  Natural experiments: Natural experiments are basically just observations of things that have already happened or that already exist. In these experiments, the scientist records what he or she observes without changing the various factors.