Which of the following shows the correct relationship?

Question

Quizplus · Accepted Answer

The width and depth of the oxygen sag curve depend on water volume and flow rate. This is because the oxygen sag curve represents the decline in oxygen levels downstream of a pollution source, and this decline is affected by the amount of water and the speed at which it flows. Slow-flowing rivers may actually be more susceptible to pollutants because the pollutants have more time to accumulate and degrade the water quality.

The other options are incorrect. Option A is incorrect because fast-flowing streams can actually help to dilute pollutants and carry them away, while slow-flowing rivers may trap pollutants in sediments. Option C is incorrect because the width and depth of the oxygen sag curve are not primarily affected by river width and substrate, although these factors can influence the ability of the river to support different types of life. Option D is incorrect because streams can recover from degradable pollutants if the pollution load is reduced and the ecosystem is given time to heal.

Which of the Following Shows the Correct Relationship