In what climate does shifting cultivation predominate

Aresearcher is making an argument that the increase in nuclear weapons led to distrust between americans and soviet citizens

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 new form of music swept the nation in the 1950s a. chamber music b. hip-hop c. jazz d. rock-and-roll