Pearson, as an active contributor to the biology learning community, is pleased to provide free access to the Classic edition of The Biology Place to all educators and their students. The purpose of the activities is to help you review material you have already studied in class or have read in your text.
In modern day baseball, teams generally have five starting pitchers, and they take it in turn to start a game every fifth day (hence the phrase rotation). Sometimes, if the schedule pans out, a team can get away with a four man rotation, and in the distant past some teams managed a three man rotation.
There are currently 70 umpires on Major League Baseball's permanent staff, and 22 Class AAA umpires eligible to umpire regular season Major League games as a fill-in umpire. Major league umpires earn $100,000 to $300,000 per year depending on their experience, with a $357 per diem for hotel and meals. Minor league umpires earn between $1,800 to $3,400 per month during the season.