Misc: humans have a bone just after the spine ends, proving that they once had ______?

Questions

which group recorded "a horse with no name" and "ventura highway"??

on the tony randall show, who played randall's father, wyatt franklin??

what words did jackie gleason end his variety show monologue with??

who sang "one pill makes you larger..."??

how long did the cardassians give ds9 to unconditionally surrender??