A paper company located on the banks of a river discharges its treated
wastewater into the river.
Which of the following water quality indicators should be measured to
best determine if the wastewater is increasing the acidity of the river?
The total suspended solids
oth
The amount of dissolved oxygen
The species richness
O The amount of hydrogen ions

The amount of dissolved oxygen- this water quality indicator should be used to determine the acidity level of the river water which get contaminated by the discharge of waste water.

Option: B

Explanation:

Industrial effluents contaminated river water. If a industry located in the bank of the river then all its waste water will go in the river water and will pollute the fresh water. To judge the water quality of river there are several indicators but the amount of dissolved oxygen is the best indicator.

Like eutrophication refers to the rising up of phosphate level of the water which decreases the dissolved oxygen level which is harmful for aquatic life. If the dissolved oxygen level disturbed then biological oxygen demand of the water will increase and will adversely affect aquatic life.

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I hope I helped!~

-Koko uwu

they should make the law strict.

Explanation:

Not to go outside. In some countries they are taking strict action for those who are going outside and allow testing for all without appointment maybe.