Why should you clean your firearm after each time you use it?

In which two ways was galileo’s improved telescope useful during the scientific revolution?

Which statement accurately compares the articles of confederation with the us constitution? a: the articles of confederation didnt allow for a president, the us constititution created the office for a president. b: the aoc were intended to be a temporary document , the us const. was intended to be permanent. c: the aoc allowed the states more freedom, the us const. gave the fed. government total power over states. d: the aoc didnt allow for states to levy taxes, the us constitution gave stayes the power to tax their own citizens. just pick a b c or d and me : )

Dr. laguardia is a cognitive neuroscientist who is interested in the effect of brain concussions on the ability to recognize faces. he conducts a quasi-experimental study in which he examines football players before and after the regular season using the benton facial recognition test (a published, widely used measure of one's ability to recognize faces) to compare those who received concussions to those who did not. he finds that players who had concussions during the regular season performed worse on the benton facial recognition test than did players who did not experience which of the following is true regarding external validity in dr.laguardia's study? a. because dr. laguardia selected participants who actually experienced concussions, the study b. because dr. laguardia's study is a quasi-experiment, it is impossible to obtain c. because dr. laguardia's dependent variable was assessed in the laboratory, the study d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.