Other than poaching, what are the possible reasons for the decline in the population of Ganges River Dolphinss?
I. Construction of dams and barrages on rivers
II. Increase in the population of crocodiles in revers
III. Getting trapped in fishing nets accidently
IV. Use of synthetic fertilizers and other agricultural chemicals in crop-fields in the vicinity of below.
Select the correct answer using the codes given below.
Answer & Explanation