Free Practice Question
CR · Critical Reasoning
705-805
Resolve a Paradox
By dating fossils of pollen and beetles, which returned after an Ice Age glacier left an area, it is possible to establish an approximate date when a warmer climate developed. In one glacial area, it appears from the insect record that a warm climate developed immediately after the melting of the glacier. From the pollen record, however, it appears that the warm climate did not develop until long after the glacier disappeared.
Each one of the following, if true, helps to explain the apparent discrepancy EXCEPT:
Each one of the following, if true, helps to explain the apparent discrepancy EXCEPT:
Answer Choices
Sign in to reveal the correct answerA
Cold-weather beetle fossils can be mistaken for those of beetles that live in warm climates.
B
Warm-weather plants cannot establish themselves as quickly as can beetles in a new environment.
C
Beetles can survive in a relatively barren postglacial area by scavenging.
D
Since planes spread unevenly in a new climate, researchers can mistake gaps in the pollen record as evidence of no new overall growth.
E
Beetles are among the oldest insect species and are much older than many warm-weather plants.
Reveal the correct answer
Sign in for free to check your answer and unlock the full explanation.
Track your performance and improve
Get detailed analytics, unlock full explanations, and move up difficulty tiers as you practice.
Explanation
Unlock the full explanation
Create a free account to reveal the correct answer, see the step-by-step explanation, and start tracking your GMAT progress.
Comments
Sign in to join the discussion
No comments yet
Be the first to share your thoughts and help others understand it better.
Sign in to commentDetails
Difficulty
705-805
Type
CR