The overuse of fertilizers in a farm results in the runoff pollution of nearby river. Which of the
following graphs correctly represents the resulting changes in the levels of oxygen and bacteria in
that river?
following graphs correctly represents the resulting changes in the levels of oxygen and bacteria in
that river?
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Answer:
OPTION A IS THE CORRECT ANSWER
Explanation:
When chemical fertilisers are washed into the river, eutrophication occurs. This results in an increase in concentration of bacteria and a subsequent fall in oxygen concentration.
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