What can modern ethical guidelines or codes of ethics adopted by professional associations for different academic disciplines trace their origins back to?

Why was frederick douglass encouraged by the dred scott decision?

Pj conducts an experimental study on the effects of soft music during high stakes science testing. he randomly assigns students at the school. in one condition he does not provide music for testing while in the other group he does provide the music. he administers a pretest at the beginning of the year and a posttest at the end of the year. pj’s design is best described as a: a.static group comparisonb. pretest-posttest control group designc.control-group-time-series designd. nonrandomized control-group pretest-posttest design

Each of the letters on the map above marks a body of water in southeast asia. which two letters represent gulfs