The Fish in the Lake at the Local Park Are

question 31

Multiple Choice

The fish in the lake at the local park are dying. A professor from the local college comes to investigate, and first she measures the dissolved oxygen because she wants to check for the ________________.

• A)aquatic biodiversity
• B)presence of bacteria
• C)possibility of eutrophication
• D)presence of heavy metals
• E)influence of acid precipitation

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