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# Dr. Theresa Pagano, a biologist, has found that the checkerspot butter

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Math Expert
Joined: 02 Sep 2009
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Dr. Theresa Pagano, a biologist, has found that the checkerspot butter  [#permalink]

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12 Jul 2018, 01:50
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Difficulty:

5% (low)

Question Stats:

91% (01:34) correct 9% (01:28) wrong based on 58 sessions

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Dr. Theresa Pagano, a biologist, has found that the checkerspot butterfly is becoming more prevalent in regions farther north than before and less prevalent in regions farther south. The northward shift of the butterflies is almost perfectly correlated with the northward shift of the warm zones in the global climate, and Dr. Pagano has therefore concluded that the changing climate is responsible for the northward movement of the butterflies.

Each of the following, if true, supports Dr. Pagano’s reasoning EXCEPT:

(A) Checkerspot butterfly colonies observed under laboratory conditions are critically affected by small temperature changes.

(B) Climate does not affect checkerspot butterflies themselves directly, but the plants they depend on thrive best in warm climates.

(C) Experimental evidence suggests that the checkerspot butterfly can adapt easily to a wide range of temperatures and geographic conditions.

(D) In recent years, abnormally low average temperatures have been correlated with a reduced checkerspot butterfly population.

(E) Several studies have shown that several other species of butterfly closely related to the checkerspot butterfly survive only in warm climates.

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Re: Dr. Theresa Pagano, a biologist, has found that the checkerspot butter  [#permalink]

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12 Jul 2018, 02:04
Direct C,it's saying the opposite of what the Dr said

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Re: Dr. Theresa Pagano, a biologist, has found that the checkerspot butter  [#permalink]

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12 Jul 2018, 03:26
+1 for C.

Stimulus :
Cause -> Changing climate
Effect -> Northward shift of the butterflies

(C) Experimental evidence suggests that the checkerspot butterfly can adapt easily to a wide range of temperatures and geographic conditions. --> Correct, If this statement was true, it would actually break the argument.

Hence, C.
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Re: Dr. Theresa Pagano, a biologist, has found that the checkerspot butter &nbs [#permalink] 12 Jul 2018, 03:26
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