37. Which of the following is NOT a reason for developing more effective systems to deal with wastewater?
(A) Population growth.
(B) Increasing manufacturing waste.
(C) Overloaded drainage systems.
(D) Heavy rainfall due to climate change.
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統計: A(13), B(16), C(18), D(193), E(0) #2379976
統計: A(13), B(16), C(18), D(193), E(0) #2379976