What did ibn battuta expected gold from king sulayman indicate about the gifts that he received from other kings

An refers to a specific factor that has a range of possible values

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.

Ryan tells ty that he will give him his best pokemon card in exchange for ty's autographed baseball card. ty feels this is a fair trade. however, when ryan trades with ty, ryan gives him his second best pokemon card instead. why was this trade not beneficial for both parties? a) ryan lied about what he was giving to ty. b) ty lied about what he was giving to ryan. c) baseball cards are worth more than pokemon cards. d) pokemon cards are worth more than baseball cards.