What Is the Cause of the Following Symptom of Pollution

question 62

Multiple Choice

What is the cause of the following symptom of pollution? There is a sharp drop in oxygen content but there is no algal bloom.

• A)Inorganic fertilizers were released nearby.
• B)Organic matter was released nearby.
• C)There is no oxygen in the water.
• D)Anaerobic bacteria are consuming most of the nutrients in the water.
• E)none of the above

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A 19th-century industrialist and philanthropist known for his vast contributions to the steel industry and for establishing numerous libraries and educational institutions.

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