Give two (2) advantages of separate system of drainage. – NABTEB QUESTION by Sunday | Sep 22 | NABTEB QUESTIONS | 0 comments ANSWER: (i) Reduction in the cost of pumping/evacuation (ii) Reduction in the cost of sewage treatment Users Also Read These:Name two methods that can be used to separate an…Name three methods that can be used to separate…SS2 Lesson Note on the Drainage: Meaning; Importance…Sulphur is soluble in ethanol but not in water while…Give the names of the TWO parts of the plants which…