Other than poaching, what are the possible reasons for the decline in the population of Gangas River

Question

Other than poaching, what are the possible reasons for the decline in the population of Gangas River Dolphins?Construction of dams and barrages on riversIncrease in the population of crocodiles in riversGetting trapped in fishing nets accidentallyUse of synthetic fertilizers and other agricultural chemicals in crop-fields in the vicinity of riversSelect the correct answer using the code given below.

Accepted Answer

Crocodile population has nothing to do with the decline in population of dolphins. It is human activities that are mainly responsible.