An open class system is based on social mobility that includes a. horizontal mobility. c. intergenerational mobility. b. vertical mobility. d. all of the above Please select the best answer from the choices provided A B C D

the rebels’ chances of victory at lexington & concord were fairly slim, given the fact that most of them very untrained and they were up against the world's greatest military force.  

answer: there were new carvings etched into the back of the sculpture and each shoulder was turned into a symbol of the birdman.

answer; the correct answer to the above statement is to increase the production of milk in a herd of milk cows, the highest producing cows were chosen as the mother;

answer is b shrapnel injuries