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12 Jun 2024, 19:50
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
70% (02:20) correct
30%
(02:25)
wrong
based on 508
sessions
History
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Not Attempted Yet
A recent study concludes that prehistoric birds, unlike modern birds, were cold-blooded. This challenges a widely held view that modern birds descended from warm-blooded birds. The conclusion is based on the existence of growth rings in prehistoric birds’ bodily structures, which are thought to be found only in cold-blooded animals. Another study, however, disputes this view. It concludes that prehistoric birds had dense blood vessels in their bones, which suggests that they were active creatures and therefore had to be warm-blooded.
Which one of the following, if true, would most help to resolve the dispute described above in favor of one party to it?
(A) Some modern warm-blooded species other than birds have been shown to have descended from cold-blooded species.
(B) Having growth rings is not the only physical trait of cold-blooded species.
(C) Modern birds did not evolve from prehistoric species of birds.
(D) Dense blood vessels are not found in all warm-blooded species.
(E) In some cold-blooded species the gene that is responsible for growth rings is also responsible for dense blood vessels
Which one of the following, if true, would most help to resolve the dispute described above in favor of one party to it?
(A) Some modern warm-blooded species other than birds have been shown to have descended from cold-blooded species.
(B) Having growth rings is not the only physical trait of cold-blooded species.
(C) Modern birds did not evolve from prehistoric species of birds.
(D) Dense blood vessels are not found in all warm-blooded species.
(E) In some cold-blooded species the gene that is responsible for growth rings is also responsible for dense blood vessels
13 Jun 2024, 19:58
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(E) it explains why cold blood prehistoric bird have rings as well as dense blood vessels. This option is directly attacking "which suggests that they were active creatures and therefore had to be warm-blooded"
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