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# Haffer's hypothesis appears to explain the distribution of species

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Senior Manager
Status: To infinity and beyond
Joined: 26 Sep 2017
Posts: 253
Location: India
Concentration: Finance, Technology
GMAT 1: 660 Q50 V30
GPA: 3.31
WE: Engineering (Computer Software)
Haffer's hypothesis appears to explain the distribution of species  [#permalink]

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12 May 2018, 11:10
1
00:00

Difficulty:

45% (medium)

Question Stats:

69% (02:08) correct 31% (01:58) wrong based on 130 sessions

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Haffer's hypothesis appears to explain the distribution of species as well as the unusual species diversity.The ice age refuges would have protected existing species from extinction.But the periodic geographic isolation of related populations(there have been an estimated 13 ice ages to date) would have facilitated the development of new species as existing species on the lowlands adopted to changing climates.

The author mentions the number of ice ages in the paragraph in order to:

A.Provide proof that cooler and drier temperatures were primarily responsible for the distribution of species in the Amazon
B.Explain how population of species was protected from extinction in the amazon basin
C.Explain how most species were able to survive periodic climatic disturbances in the Amazon basin
D.Suggest that certain types of climatic disturbances cause more species diversity than other types of climatic disturbances
E.Suggest that geographical isolation may have occured often enough to cause high species diversity in the Amazon basin

Source:
Crackverbal

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Re: Haffer's hypothesis appears to explain the distribution of species  [#permalink]

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12 May 2018, 11:25
Haffer's hypothesis appears to explain the distribution of species as well as the unusual species diversity.The ice age refuges would have protected existing species from extinction.But the periodic geographic isolation of related populations(there have been an estimated 13 ice ages to date) would have facilitated the development of new species as existing species on the lowlands adopted to changing climates.

Below option explains the highlighted portion: [no of] geographic isolation = development of new species
E.Suggest that geographical isolation may have occured often enough to cause high species diversity in the Amazon basin
Director
Joined: 04 Sep 2015
Posts: 526
Location: India
WE: Information Technology (Computer Software)
Re: Haffer's hypothesis appears to explain the distribution of species  [#permalink]

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19 Sep 2018, 10:13
srignz wrote:
Haffer's hypothesis appears to explain the distribution of species as well as the unusual species diversity.The ice age refuges would have protected existing species from extinction.But the periodic geographic isolation of related populations(there have been an estimated 13 ice ages to date) would have facilitated the development of new species as existing species on the lowlands adopted to changing climates.

Below option explains the highlighted portion: [no of] geographic isolation = development of new species
E.Suggest that geographical isolation may have occured often enough to cause high species diversity in the Amazon basin

Option E suggests that the more number of ice ages means that more number of isolation, and more isolations would create more diverse species.. because there are multiple chances/isolations.
Re: Haffer's hypothesis appears to explain the distribution of species &nbs [#permalink] 19 Sep 2018, 10:13
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