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Inessa [10]
3 years ago
9

A massive bluegill fish kill was observed in a lake near a power plant during the winter months. It was determined that the plan

t was releasing large amounts of hot water into the lake. Which of the following explains what likely caused the death of so many bluegills in the lake?
A: The increased water temperature caused dissolved oxygen levels to increase, leading to greater metabolic activity of catfish, which outcompeted the bluegill fish for resources.
B: The influx of warmer water caused an unexpected increase in the metabolic rate of the bluegills, which led to increased physiological stress from limited resource availability.
C: Rates of organic matter decomposition increased, which lead to an increase in dissolved oxygen and increased bacteria levels.
D: Photosynthetic output of aquatic plants decreased because of the higher temperature, which lowered the amount of carbon dioxide available for bluegills to carry out cellular respiration.
Biology
1 answer:
Savatey [412]3 years ago
8 0

Answer:

Option B

Explanation:

Option D is incorrect, as increased photosynthesis would increase oxygen supply present, not carbon dioxide supply.

Option C is incorrect, as increased decomposition would increase carbon dioxide released and oxygen present is reduced, not increased.

Option A is unlikely as if this were the case, increased oxygen levels would enable bluegill fish to survive as well.

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