345343 Drinking of mineral water with very low level of pesticides \((0.02 \mathrm{ppm})\) for long periods may

345344 Reason for which DDT is considered as a major pollutant is

345345 There was a heavy mortality of fishes reported in a lake near a village. The reasons can be considered as
i. The lake water turned green and stinky
ii. Phytoplankton populations in the lake declined as there was decrease in photosynthesis
iii. Area was sprayed by DDT by aircraft
iv. Lots of urea and phosphate fertilizer were used in crops of vicinity
Which of the above were the main causes of fish mortality in the lake?

345346 Use of pesticides are problematic because

345343 Drinking of mineral water with very low level of pesticides \((0.02 \mathrm{ppm})\) for long periods may

345344 Reason for which DDT is considered as a major pollutant is

345345 There was a heavy mortality of fishes reported in a lake near a village. The reasons can be considered as
i. The lake water turned green and stinky
ii. Phytoplankton populations in the lake declined as there was decrease in photosynthesis
iii. Area was sprayed by DDT by aircraft
iv. Lots of urea and phosphate fertilizer were used in crops of vicinity
Which of the above were the main causes of fish mortality in the lake?

345346 Use of pesticides are problematic because

345343 Drinking of mineral water with very low level of pesticides \((0.02 \mathrm{ppm})\) for long periods may

345344 Reason for which DDT is considered as a major pollutant is

345345 There was a heavy mortality of fishes reported in a lake near a village. The reasons can be considered as
i. The lake water turned green and stinky
ii. Phytoplankton populations in the lake declined as there was decrease in photosynthesis
iii. Area was sprayed by DDT by aircraft
iv. Lots of urea and phosphate fertilizer were used in crops of vicinity
Which of the above were the main causes of fish mortality in the lake?

345346 Use of pesticides are problematic because

345343 Drinking of mineral water with very low level of pesticides \((0.02 \mathrm{ppm})\) for long periods may

345344 Reason for which DDT is considered as a major pollutant is

345345 There was a heavy mortality of fishes reported in a lake near a village. The reasons can be considered as
i. The lake water turned green and stinky
ii. Phytoplankton populations in the lake declined as there was decrease in photosynthesis
iii. Area was sprayed by DDT by aircraft
iv. Lots of urea and phosphate fertilizer were used in crops of vicinity
Which of the above were the main causes of fish mortality in the lake?

345346 Use of pesticides are problematic because