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UPSC 2014: Other than poaching, what are the possible reasons for the decline in the population of Ganges River Dolphins? 1. Construction of dams and barrages on rivers 2. Increase in the population of crocodiles in rivers 3. Getting trapped in fishing nets accidentally 4. Use of synthetic fertilizers and other agricultural chemicals in crop-fields in the vicinity of rivers Select the correct answer using the code given below.
(a)1 and 2 only
(b)2 and 3 only
(c)1, 3 and 4 only
(d)1, 2, 3 and 4
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Not attemptedCorrect Answer: (c) 1, 3 and 4 only
Major non-poaching threats include: (1) dams and barrages that fragment habitat and reduce flow; (3) accidental entanglement in fishing nets; and (4) pollution from fertilisers and agro-chemicals lowering prey availability and causing toxicity. An increase in crocodile numbers is not identified by conservation agencies as a significant driver of dolphin decline. Hence 1, 3 and 4 only are correct. ([wwfindia.org](https://www.wwfindia.org/about_wwf/priority_species/threatened_species/ganges_river_dolphin/?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2014 Environment & Ecology question?▼
The correct answer is option (c): 1, 3 and 4 only. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Biodiversity & Conservation question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2014, GS Paper 1, as Question 14. It falls under Environment & Ecology > Biodiversity & Conservation.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Biodiversity & Conservation?▼
UPSC has asked 45 questions from Biodiversity & Conservation (under Environment & Ecology) across multiple years. Visit the topic page to see the full list and year-wise trends.