What is the difference between volcano and vent?

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

Astudent analyzed ears of corn that demonstrated two traits in the f2 kernels, purple or white colors and smooth on wrinkled shapes. a tabulation of 135 individual kernels gave the following results: purple and smooth = 75 white and smooth = 28 purple and wrinkled = 24 white and wrinkled = 8 what would be the only phenotype present in the f1 ger

What type of graph presents information about how often certain or traits occur?