REM sleep is called paradoxical sleep because a. our heart rate is slow and steady, while our breathing is highly irregular b. we are deeply asleep but can be awakened easily c. our nervous system is highly active, while our voluntary muscles hardly move d. it leads to highly imaginative dreams that are perceived as colorless images

The document shows a personal allowances worksheet. this document is part of a

Acriterion for waiving informed consent is that, when appropriate, subjects are provided additional pertinent information after the study. in which of the following studies would it not be appropriate to provide subjects with information about missing elements of consent: a study in which researchers told students that they would be given a quiz after reading some study materials when the researchers did not intend to use a quiz, but were attempting to focus subjects’ attention on the material. a study in which subjects were told that they performed in the third quartile on an anagram task when in reality students were randomly assigned scores that were not related to their actual performance. a study in which subjects were assigned to study activities based on an undesirable or unflattering physical characteristic as assessed by members of the research team. a study involving decision-making games in which subjects were led to believe that they were interacting with another student in another room, but were actually interacting with a computer programmed to provide consistent responses to all subjects.

What are the most populous and least populous areas of russia? and why are some areas more heavily populated than others?