Answer:
Case-Control Study
Explanation:
A case–control study is a type of observational study in which two existing groups differing in outcome are identified and compared on the basis of some supposed causal attribute
I have witnessed a change in socail media because Facebook is starting to end up like Snapchat and Instragram. Not only is it Facebook doing it, its also Facebook messenger.
Based on this information, the researcher can conclude that Ryan <u>"has just entered Stage 2 sleep".</u>
Stage 2 sleep, which for the most part keeps going around 20 minutes, is described by an abating pulse and a reduction in body temperature. Your body lessens its action to set you up to go into a profound rest.
It winds up harder to wake you up.
Your brain begins to produce bigger waves.
Your circulatory strain likewise diminishes, and other metabolic capacities back off as well.