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Difficulty:
25%
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Question Stats:
75% (01:26) correct
25%
(01:50)
wrong
based on 339
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Herons must eat large numbers of fish to survive. Therefore, according to naturalists, when many herons nest near each other in a marsh, large numbers of fish must be available to them. But many herons successfully nest in the Pahargaon marsh, and that marsh has been nearly empty of fish for many years.
Which one of the following, if true, most helps to reconcile the apparent discrepancy described above?
(A) Pesticides used on nearby farms have seeped into the waters of the Pahargaon marsh and killed most of the fish.
(B) The Pahargaon marsh has been growing saltier over the years, killing off much of the vegetation that the fish needed to eat.
(C) The herons in the Pahargaon marsh have been successfully raising unusually large families, with an average of almost two offspring
surviving from each nesting.
(D) Herons nesting in the Pahargaon marsh normally feed on fish living in nearby marshes.
(E) The large heron population in the Pahargaon marsh placed so great a strain on the fish population that the number of fish declined dramatically.
Which one of the following, if true, most helps to reconcile the apparent discrepancy described above?
(A) Pesticides used on nearby farms have seeped into the waters of the Pahargaon marsh and killed most of the fish.
(B) The Pahargaon marsh has been growing saltier over the years, killing off much of the vegetation that the fish needed to eat.
(C) The herons in the Pahargaon marsh have been successfully raising unusually large families, with an average of almost two offspring
surviving from each nesting.
(D) Herons nesting in the Pahargaon marsh normally feed on fish living in nearby marshes.
(E) The large heron population in the Pahargaon marsh placed so great a strain on the fish population that the number of fish declined dramatically.
04 Jan 2023, 18:41
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phoenix2194
Conclusion: Even though marsh has been nearly empty of fish for many years, many herons successfully nest in the Pahargaon marsh
The Question stem asks us to reconcile the discrepancy between 2 clauses of above mentioned conclusion
(A) Pesticides used on nearby farms have seeped into the waters of the Pahargaon marsh and killed most of the fish.
- Option A talks about the cause of fish death but doesn't correlate with "herons successfully nesting", doesn't resolve the discrepancy
(B) The Pahargaon marsh has been growing saltier over the years, killing off much of the vegetation that the fish needed to eat.
- Option B talks about the cause of fish decline but doesn't correlate with "herons successfully nesting", doesn't resolve the discrepancy
(C) The herons in the Pahargaon marsh have been successfully raising unusually large families, with an average of almost two offspring
surviving from each nesting.
- Option C talks about "herons successfully nesting" but doesn't state anything on their dependence over fish, doesn't resolve the discrepancy
(D) Herons nesting in the Pahargaon marsh normally feed on fish living in nearby marshes.
- Since the Pahargaon marsh is better habitat & it is also surrounded by many other marshes, the herons feed on fish living in nearby marshes
(E) The large heron population in the Pahargaon marsh placed so great a strain on the fish population that the number of fish declined dramatically.[/quote]
- This option doesn't resolve the discrepancy but infers (based on evidence & reasoning) why there is a decline in fish population
29 Jan 2023, 14:08
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phoenix2194
Question type- resolve paradox
Despite little or no fish population in Pahargaon marsh, heron successfully nest in there.How is this possible??
(A) Pesticides used on nearby farms have seeped into the waters of the Pahargaon marsh and killed most of the fish- provides explanation for the second part-decline in fish population-but no reason given for heron successfully nesting there Incorrect
(B) The Pahargaon marsh has been growing saltier over the years, killing off much of the vegetation that the fish needed to eat- provides explanation for the second part-decline in fish population-but no reason given for heron successfully nesting there Incorrect
(C) The herons in the Pahargaon marsh have been successfully raising unusually large families, with an average of almost two offspring surviving from each nesting. - Repeating the premise and giving extra details about herons population but not providing any reason as to how they are surviving even though fish is limited- Incorrect
(D) Herons nesting in the Pahargaon marsh normally feed on fish living in nearby marshes- This resolves the paradox, that since herons feed on fish living in nearby marshes,not in Pahargaon, the fish population in Pahargaon would not affect herons- Correct
(E) The large heron population in the Pahargaon marsh placed so great a strain on the fish population that the number of fish declined dramatically- If the reason for the decline in fish population in Pahargaon marsh is heron itself then how is it possible that they still successfully nest in there??, contracdictory explanation- Incorrect
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