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Cotton grass, which grows only in arctic regions, has been the only su

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Cotton grass, which grows only in arctic regions, has been the only su  [#permalink]

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New post 10 Feb 2019, 01:58
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  55% (hard)

Question Stats:

62% (02:05) correct 38% (01:48) wrong based on 65 sessions

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Cotton grass, which grows only in arctic regions, has been the only summertime source of protein available to caribou. Caribou that do not get adequate amounts of protein in the summer are unable to reproduce the following year. Rising average temperatures in arctic regions, however, are causing cotton grass to disappear. Therefore, if the warming trend continues, caribou are likely to become extinct.

Which of the following is an assumption on which the argument depends?

A. cotton grass is the only one of the caribou’s food sources that is becoming scarce as temperatures rise in arctic regions.
B. caribou that do not eat enough protein to reproduce do not live as long as caribou that do
C. The warming trend in arctic regions will not enable other plants capable of providing protein to caribou to grow there.
D. The caribou is the only animal that depends on cotton grass as a major source of food.
E. If the warming trend continues and cotton grass disappears from arctic regions, then cotton grass will be extinct.

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Re: Cotton grass, which grows only in arctic regions, has been the only su  [#permalink]

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New post 10 Feb 2019, 09:57
carcass wrote:
Cotton grass, which grows only in arctic regions, has been the only summertime source of protein available to caribou. Caribou that do not get adequate amounts of protein in the summer are unable to reproduce the following year. Rising average temperatures in arctic regions, however, are causing cotton grass to disappear. Therefore, if the warming trend continues, caribou are likely to become extinct.

Which of the following is an assumption on which the argument depends?


Conclusion : if the warming trend continues, caribou are likely to become extinct.

A. cotton grass is the only one of the caribou’s food sources that is becoming scarce as temperatures rise in arctic regions.
this is already given in the argument, but if there were others why are they even getting extinct for that matter ??

B. caribou that do not eat enough protein to reproduce do not live as long as caribou that do
Comparison between different types, irrelevant

C. The warming trend in arctic regions will not enable other plants capable of providing protein to caribou to grow there.
This is correct assumption,
On Negation will say The warming trend in arctic regions will enable other plants capable of providing protein to caribou to grow there.
This means that caribou wont be extinct.

D. The caribou is the only animal that depends on cotton grass as a major source of food.
Irrelevant

E. If the warming trend continues and cotton grass disappears from arctic regions, then cotton grass will be extinct
This is opposite the scope
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Re: Cotton grass, which grows only in arctic regions, has been the only su   [#permalink] 10 Feb 2019, 09:57
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