What does population density mean?

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 of the following combinations represents the extremes of project organization? a. strong matrix and balanced matrixb. functional and projectizedc. projectized and balanced matrixd. projectized and strong matrixe. strong matrix and functional

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