What is the relation between dissolved oxygen,BOD, water pollution. state a relation with reason.
BOD refers to biological oxygen demand. when BOD increases water pollution also increses.also when BOD increases dissolved oxygen decreses.
when water gets pollutred it contains a large amount of organic matter .microbes will grow there and they start consuming the organic matter.this process requires oxygen and the dissolved oxygen gets utilised .so the dissolved oxygen decreses and othe aquatic organisms die.
when water gets pollutred it contains a large amount of organic matter .microbes will grow there and they start consuming the organic matter.this process requires oxygen and the dissolved oxygen gets utilised .so the dissolved oxygen decreses and othe aquatic organisms die.