LIVE Course for free

Rated by 1 million+ students
Get app now
0 votes
12 views
in Biology by (25.0k points)
A lake near a village suffered heavy mortality of fishes within a few days Consider the following reasons for this?
(a) Lots of urea and phosphate fertilizers were used in the crops in the vicinity.
(b) The area was sprayed with DDT by an aircraft.
(c) The lake water turned green and stinky.
(d) Phytoplankton population 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. a, b
B. b, c
C. c, d
D. a, c

Please log in or register to answer this question.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...