The compound schedule takes two or more basic schedules that occur on reverse, usually at random level, a discriminating stimulus is correlated with the presence and absence of the element of the schedule and given the reinforcement for getting the response . In mixed schedule reinforcement consists two or more schedules that occur in alternating usually random sequence level. No discriminating stimulus is correlated with the presence or absence of each element of the schedule. Reinforcement is given to the response requirement of the elements in the effects at any time that is given by the subject.
Chile<span> is among one of many countries facing dangerous </span>earthquakes<span> because it is located on active seismic zones named The Ring of Fire.</span>