IV Phytoplankton populations in the lake declined initially thereby greatly reducing photosynthesis. Which two of the above were the main causes of fish mortality in the lake?
A. II, III
B. III, IV
C. I, III
D. I, II
Answer:D
IV Phytoplankton populations in the lake declined initially thereby greatly reducing photosynthesis. Which two of the above were the main causes of fish mortality in the lake?
A. II, III B. III, IV C. I, III D. I, II