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.

Texas’ gulf coastal plains are the western extension of the coastal plain extending from the atlantic ocean to beyond the rio grande. its characteristic rolling to hilly surface covered with a heavy growth of pine and hardwoods extends into east texas. in the increasingly arid west, however, its forests become secondary in nature, consisting largely of post oaks and, farther west, prairies and brushlands.