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17 Sep 2025, 01:07
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
85%
(hard)
Question Stats:
51% (02:14) correct
49%
(02:23)
wrong
based on 281
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Over an extended period of time, the average seawater temperature in a region of an ocean increased by over 1 degree Celsius. During that same time, the average size of the haddock population in the region decreased by more than 25 percent. This observation led scientists to hypothesize that warmer waters favored smaller fish because their bodies were less energy intensive and better able to adapt to the warmer water. However, long-term laboratory experiments showed no changes in the average size of haddock as water temperatures were increased.
Which of the following best explains the differences between the observations in nature and those in the laboratory experiments?
(A) The measurements of fish size in the ocean were made by oceanographers, but the ones in the laboratory were made by biologists.
(B) Measurements were made more frequently in the laboratory experiments than in the ocean.
(C) A change in marine fishing regulations during the period allowed the use of nets with a more tightly spaced mesh than had previously been permitted.
(D) The population in the ocean of predators that feed on smaller haddock increased during the period.
(E) The water salinity measured in the laboratory exactly matched that of the ocean.
Which of the following best explains the differences between the observations in nature and those in the laboratory experiments?
(A) The measurements of fish size in the ocean were made by oceanographers, but the ones in the laboratory were made by biologists.
(B) Measurements were made more frequently in the laboratory experiments than in the ocean.
(C) A change in marine fishing regulations during the period allowed the use of nets with a more tightly spaced mesh than had previously been permitted.
(D) The population in the ocean of predators that feed on smaller haddock increased during the period.
(E) The water salinity measured in the laboratory exactly matched that of the ocean.
17 Sep 2025, 10:32
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IMO B
Because :
A - even if measurements were made by different groups, that doesn't justify the size difference
C- change in fishing regulations looks out of scope
D- Still doesn't explain the difference in avg size increment in ocean vs Lab
E- out of scope
Please let me know if my logic is correct. Thanks!!
Because :
A - even if measurements were made by different groups, that doesn't justify the size difference
C- change in fishing regulations looks out of scope
D- Still doesn't explain the difference in avg size increment in ocean vs Lab
E- out of scope
Please let me know if my logic is correct. Thanks!!
Bunuel
17 Sep 2025, 15:14
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okHedwig
The Answer here is C:
We need an alternate explanation for why the Fish size decresed in Ocean and REmained same in Labs while temprtured increase was the same.
(A) The measurements of fish size in the ocean were made by oceanographers, but the ones in the laboratory were made by biologists.
Incorrect: Who made measurements doesnt explain or cast doubt on why fish size decreased in Ocean
(B) Measurements were made more frequently in the laboratory experiments than in the ocean.
Incorrect: Frequent measurements or infrequent, we are taking the average, Doesnt matter
(C) A change in marine fishing regulations during the period allowed the use of nets with a more tightly spaced mesh than had previously been permitted.
Correct: An alternate cause, the adaptation to tightly spaced fishing nets was the reason for size of fish going down in ocean. In lab such a condition is invalid and hence size remained the same
(D) The population in the ocean of predators that feed on smaller haddock increased during the period.
Incorrect:Out of scope
(E) The water salinity measured in the laboratory exactly matched that of the ocean.
Incorrect: A good to know fact, but cannot explain why size of fish decreased in ocean and not in lab even when salinity was maintained same for both cases.
The Answer here is C:
We need an alternate explanation for why the Fish size decresed in Ocean and REmained same in Labs while temprtured increase was the same.
(A) The measurements of fish size in the ocean were made by oceanographers, but the ones in the laboratory were made by biologists.
Incorrect: Who made measurements doesnt explain or cast doubt on why fish size decreased in Ocean
(B) Measurements were made more frequently in the laboratory experiments than in the ocean.
Incorrect: Frequent measurements or infrequent, we are taking the average, Doesnt matter
(C) A change in marine fishing regulations during the period allowed the use of nets with a more tightly spaced mesh than had previously been permitted.
Correct: An alternate cause, the adaptation to tightly spaced fishing nets was the reason for size of fish going down in ocean. In lab such a condition is invalid and hence size remained the same
(D) The population in the ocean of predators that feed on smaller haddock increased during the period.
Incorrect:Out of scope
(E) The water salinity measured in the laboratory exactly matched that of the ocean.
Incorrect: A good to know fact, but cannot explain why size of fish decreased in ocean and not in lab even when salinity was maintained same for both cases.
