The document is the US constitution
Answer:
A group comparison study
Explanation:
In group comparison study, an experiment compares two groups(the beareaved and nonbeareaved adults in the above study) such as in testing the effects of a treatment where a "comparison group" receives either an alternative treatment or no treatment so that it functions as a source of "counterfactual" causal inference for the purpose of the experiment.
Prehistory is the history before any records (as in, detailed reliable records, such as writing), for which only very indirect evidence is available such as archaeological funds. So- there could be no weather reports from pre-history! if there were, we would call this time "history" - the correct answer is d.
Answer:
When the cue ball hits another ball at an angle, the cue ball will keep some of its original velocity. Both balls will roll. The further off-center that you strike the ball, the more velocity the cue ball will keep.
