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Director
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Seemingly incosequential changes in sea temperature due to [#permalink]
 04 Sep 2005, 19:10
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Seemingly incosequential changes in sea temperature due to global warming eventually result in declines in fish and seabird populations. A rise of just two degrees prevents the vertical mixing of seawater from different strata. This restricts the availability of upwelling nutrients to phytoplankton. Since zooplankton, which feed upon phytoplankton, feed the rest of the food chain, the declines are inevitable.
Which one of the following most accurately describes the role played in the argument by the statement that zooplankton feed upon phytoplankton?
A) It is a hypothesis supported by the fact that phytoplankton feed on upwelling nutrients
B) It is intended to provide an example of the ways in which the vertical mixing of seawater affects feeding habits
C) It helps show how global temperature changes affect larger sea animals indirectly
D) It is offered as a reason that global warming must be curtailed
E) It is offered in support of the idea that global warming poses a threat to all organisms.
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Manager
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I would say C). I think A, B, & D can easily be eliminated so that leaves C and E. There is no reference to all organisms, so C is what I would choose... but then again I'm barely literate..... 
What's the answer?
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Manager
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i also take C
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only if i could choose....
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I think E is generic, and fits the bill cause here we are not only talking about fishes but birds as well....
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Re: CR: Bold Faced - Zooplankton and Phytoplankton [#permalink]
05 Sep 2005, 18:26
Concuring with freshina, go with E.
The choices are C and E. C says that the changes affect (only) the larger animals but the passage doesnot say anything only about larger animals. But it says "zooplankton feed the rest of the food chain". if so then, Bold face is offered in support of the idea that global warming poses a threat to all organisms.
Quote: (C) It helps show how global temperature changes affect larger sea animals indirectly
(E) It is offered in support of the idea that global warming poses a threat to all organisms.
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if E had "all seawater organisms" I would have selected it. I wonder what is wrong with B?
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I'll go with E. B says 'larger sea animals' but sea birds are not sea animals, are they?
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Current Student
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intially I was also stuck btw B & E...but B is too general in its scope....we need to be a bit more specific yet not be too specific at the same time...E seems better...
Bhai wrote: if E had "all seawater organisms" I would have selected it. I wonder what is wrong with B?
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Re: CR: Bold Faced - Zooplankton and Phytoplankton [#permalink]
06 Sep 2005, 11:43
Going with E.
The decrease in phytoplanton causes a decrease in zooplankton which, indirectly, had an effect on all organisms (ie feed the rest of the food chain).
What is OA?
gmataquaguy wrote: Seemingly incosequential changes in sea temperature due to global warming eventually result in declines in fish and seabird populations. A rise of just two degrees prevents the vertical mixing of seawater from different strata. This restricts the availability of upwelling nutrients to phytoplankton. Since zooplankton, which feed upon phytoplankton, feed the rest of the food chain, the declines are inevitable.
Which one of the following most accurately describes the role played in the argument by the statement that zooplankton feed upon phytoplankton?
A) It is a hypothesis supported by the fact that phytoplankton feed on upwelling nutrients
B) It is intended to provide an example of the ways in which the vertical mixing of seawater affects feeding habits
C) It helps show how global temperature changes affect larger sea animals indirectly
D) It is offered as a reason that global warming must be curtailed
E) It is offered in support of the idea that global warming poses a threat to all organisms.
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Senior Manager
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E for me too.
GA
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I'd go with C.
E is out of scope. We're only talking about global warming and its effects on oceanlife population levels.
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May sound weird, but I will go with A unless OA is known.
As this is bold faced question, we are talking about the statement in bold ONLY, obviously in context of the argument. The statement says:
Since zooplankton, which feed upon phytoplankton, feed the rest of the food chain, the declines are inevitable.
This is hypothesis (A hypothesis (= assumption in ancient Greek) is a proposed explanation for a phenomenon.) This hypothesis assumes fact given in statement before it:
This restricts the availability of upwelling nutrients to phytoplankton.
That is:
feed the rest of the food chain
after bold face segment says:
zooplankton -feed upon- phytoplankton - feed upon - others
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I think it's E.
A) The hypothesis is that changes in sea temperature results in declines in fish and seabird populations
B) Feeding habits are not affected by the vertical mixing of seawater, but rather the lack of food available.
C) Zooplanktons are large??
D) There is no mention of curtailing global warming.
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It can't be E. Check out what the passage says in the first or second sentence:
Seemingly incosequential changes in sea temperature due to global warming eventually result in declines in fish and seabird populations
It's for fish and seabird, says nothing abou all ocean life.
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Initiallt I thought "E" but two interns sound convincing so I am in favor of A
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Manager
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Ah, you are right. I change my answer to C because the passage mentions that zooplanktons feed the rest of the food chain. =)
edsilver wrote: It can't be E. Check out what the passage says in the first or second sentence:
Seemingly incosequential changes in sea temperature due to global warming eventually result in declines in fish and seabird populations
It's for fish and seabird, says nothing abou all ocean life.
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Director
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The OA is C. I eliminated E just on the basis that E talks about "a threat to all organisms". Too extreme.
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