They ensure continued for production
Swing music with its strong rhythm sections anchored to a lead section usually played by brass instruments, woodwinds and sometimes string instruments.
8. B
9. D
10. C
11. A
12. (called the polor front but there are only 4 definitions??)
Cinder cones are the simplest type of volcano. They are built from particles and blobs of congealed lava ejected from a single vent. As the gas-charged lava is blown violently into the air, it breaks into small fragments that solidify and fall as cinders around the vent to form a circular or oval cone.