Choose the correct statements
A. Increase in temperature reduces DO in lake water.
B. Agricultural run - off introduces turbidity in lake water.
C. Sewage discharge increases both DO and BOD in lake water.
D. Enrichment of nutrients speed - up the aging of lakes.
E. Atmospheric exchange and photosynthesis introduces DO in lake water.
Choose the correct answer from the options given below:
1
A, C and D only
2
B, C, D and E only
3
A, B, C, D and E
4
A, B, D and E only