PrepTest 101, Section 4, Question 17
When the same habitat types (forests, oceans, grasslands,(450 more words not shown)
As presented in the passage,(15 more words not shown)
- AIn the absence(15 more words not shown)
- BNo future ice(13 more words not shown)
- CIf no further(16 more words not shown)
- DResearchers will continue(16 more words not shown)
- EFuture ice ages(12 more words not shown)
Reading the passage
The time theory says tropical species have had more uninterrupted time to emerge. Ice ages kept disrupting other regions. So what if those interruptions stopped? Species elsewhere could have more time to develop too. That's the prediction we're testing, even though the author ultimately questions this theory.
Working the answers
- ACorrect
Without further ice ages, high-latitude regions could get the uninterrupted development time the theory uses to explain tropical diversity. Removing the proposed obstacle could allow their species numbers to increase significantly.
- B
The theory uses past climatic disruption to explain species numbers. It doesn't say future ice ages would leave temperate climates unchanged.
- C
More time for species to emerge doesn't mean a temperate or polar climate would become tropical. This changes what the theory predicts will develop.
- D
Researchers do expect undiscovered tropical species, according to paragraph 1. But that isn't a prediction from the time theory: finding species that already exist is different from allowing new species time to emerge.
- E
The theory explains what interruptions could do to species development. It doesn't establish that future ice ages are likely to interrupt high-latitude climatic conditions.
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