With continuous reinforcement, an organism is reinforced with intermittent reinforcement, an organism is reinforced

a axis of a graph is a color or shade so we can all go outside and have a party so we can eat   some grilled cheese sammiches and broccoli and have some ugly fun times

i don't know why i put this, i know its not the i was just bored : p

delete this answer while you can

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."