How is an oxygen sag curve created?
A) unlined landfills,household chemicals,mining refuse,and industrial discharges
B) breakdown of biodegradable wastes by bacteria depletes dissolved oxygen
C) bacteria from livestock and food-processing wastes,and excess salts from soils of irrigated cropland
D) major erosion of sediments and runoff of toxic chemicals
E) animal feedlots,food-processing facilities,paper mills

Question

How is an oxygen sag curve created?​
A) ​unlined landfills,household chemicals,mining refuse,and industrial discharges
B) ​breakdown of biodegradable wastes by bacteria depletes dissolved oxygen
C) ​bacteria from livestock and food-processing wastes,and excess salts from soils of irrigated cropland
D) ​major erosion of sediments and runoff of toxic chemicals
E) animal feedlots,food-processing facilities,paper mills​

Quizplus · Accepted Answer

An oxygen sag curve is created by the breakdown of biodegradable wastes by bacteria, which depletes dissolved oxygen in the water. This is represented as a curve on a graph, where the oxygen concentration decreases downstream from the source of the pollution and gradually recovers as the water moves further away and the bacteria die off. Options A, C, D, and E may all contribute to water pollution but do not specifically describe the process of creating an oxygen sag curve.

How Is an Oxygen Sag Curve Created?​

How Is an Oxygen Sag Curve Created?