Are rules that standardize how people act at work on a day-to-day basis.

Mr. mann's science students were experimenting with speed. they set up a 1 meter (100 cm) track. the students used balls instead of cars. the balls were different sizes and made of different materials. four at a time, students rolled balls around the track to see which had the fastest and slowest speeds. some of their data are shown in the table. which ball will take the longest to complete one lap around the track?

Which groups of people most directly benefited from song innovations in the song dynasty‘s open border policy?

For an actor, keeping his mind on will ultimately his performance.