Understanding the argument -
Zoologist: Plants preferentially absorb heavy nitrogen from rainwater. Heavy nitrogen consequently becomes concentrated in the tissues of herbivores, and animals that eat meat in turn exhibit even higher concentrations of heavy nitrogen in their bodily tissues. - Background Info.
We compared bone samples from European cave bears of the Ice Age with blood samples from present-day bears fed meat-enriched diets, and the levels of heavy nitrogen present in these samples were identical. Thus, the prehistoric European cave bears were not exclusively herbivores.
Which one of the following, if true, would most strengthen the zoologist's argument?
(A) Plants can also absorb heavy nitrogen from a variety of sources other than rainwater. - out of scope.
(B) The rate at which heavy nitrogen accumulated in the blood of Ice Age herbivores can be inferred from samples of their bones. - "rate" is out of scope, and option B is distorted.
(C) The same
...
Zoologist: Plants preferentially absorb heavy nitrogen from rainwater. Heavy nitrogen consequently becomes concentrated in the tissues of herbivores, and animals that eat meat in turn exhibit even higher concentrations of heavy nitrogen in their bodily tissues. - Background Info.
We compared bone samples from European cave bears of the Ice Age with blood samples from present-day bears fed meat-enriched diets, and the levels of heavy nitrogen present in these samples were identical. Thus, the prehistoric European cave bears were not exclusively herbivores.
Which one of the following, if true, would most strengthen the zoologist's argument?
(A) Plants can also absorb heavy nitrogen from a variety of sources other than rainwater. - out of scope.
(B) The rate at which heavy nitrogen accumulated in the blood of Ice Age herbivores can be inferred from samples of their bones. - "rate" is out of scope, and option B is distorted.
(C) The same
...
Statistics : Posted by Raman109 • on 26 Aug 2017, 05:38 • Replies 6 • Views 5557
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