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A lake near a village suffered heavy mor...

A lake near a village suffered heavy mortality of fishes within a few days. Consider the following reasons for this :
1. Lots of urea and phosphate fertilize were used in the crops in the vicinity
2 The area was spreyed with DDT by an aircraft
3. The lake was turned green and stinky
4. Phytoplankton populations in the lake declined initially therby greatly reducing photosybthesis.

A

1 and 2

B

2 and 3

C

3 and 4

D

1 and 3

Text Solution

Verified by Experts

The correct Answer is:
B
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