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What Is the Cause of the Highlighted Zone with Dissolved

Question 18

Multiple Choice

What is the cause of the highlighted zone with dissolved oxygen less than 2.0 mg/l? What is the cause of the highlighted zone with dissolved oxygen less than 2.0 mg/l? A) high carbon and nitrogen concentrations B) high iron concentrations C) low oxygen concentrations D) high phosphorus concentrations E) the Deepwater Horizon oil spill


A) high carbon and nitrogen concentrations
B) high iron concentrations
C) low oxygen concentrations
D) high phosphorus concentrations
E) the Deepwater Horizon oil spill

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