What can be tide directly to the invention of the cotton gin?

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?

List two benefits of reforestation to the environment

When individuals with a stake in an issue affecting them begin to propose and develop solutions to a problem, they engage in