When was the Pacific Ocean discoverd

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?

What were some benefits of the lewis and clark expedition?

Toward the end of the roman empire, what caused a decrease in the use of coined money tell me now