| (i) Lots of urea and phosphate fertilizer were used in the crops in the vicinity |
| (ii) The area was sprayed with DDT by an aircraft |
| (iii) The lake water turned green and stinky |
| (iv) Phytoplankton populations in the lake declined initially thereby greatly reducing photosynthesis. |
A) (i) and (iii)
B) (i), (ii) and (iv)
C) (iii) and (iv)
D) (ii), (iii) and (iv)
Correct Answer: A
Solution :
[a] Lots of urea and phosphate fertilizer were used in the crops in the vicinity and the lake water turned green and stinky. Due to this, lake near a village suffered heavy mortality of fishes within a few days.
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