8. Rainbow trout need at least 6.0 mg/L of dissolved oxygen to survive. Biologists are trying to reestablish rainbow trout in a mountain stream but the stream only has 5.5 mg/L of dissolved oxygen. Which of the following would be the most harmful to the development of the rainbow trout population? A. Create more bends in the stream to allow the water to slow down.
B. Cut down trees along the stream to allow more sunlight to warm the water.
C. Pull out aquatic plants growing in the stream.
D. Remove dams along the stream to allow the water to flow faster.
